CN110449309A - A kind of fluidic oscillator array and its frequency synchronization method - Google Patents
A kind of fluidic oscillator array and its frequency synchronization method Download PDFInfo
- Publication number
- CN110449309A CN110449309A CN201910758278.8A CN201910758278A CN110449309A CN 110449309 A CN110449309 A CN 110449309A CN 201910758278 A CN201910758278 A CN 201910758278A CN 110449309 A CN110449309 A CN 110449309A
- Authority
- CN
- China
- Prior art keywords
- feedback
- fluidic oscillator
- outlet
- channel
- fluidic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
Abstract
A kind of fluidic oscillator array and its frequency synchronization method, including the 1st to n-th fluidic oscillator, N >=2；It answers back to be connected to form feedback channel with the feedback of (n+1)th fluidic oscillator in the feedback outlet of n-th of fluidic oscillator；The disclosure can be synchronous by the frequency of oscillation of fluidic oscillator all in the array containing two or more fluidic oscillator, and there is fixed phase difference when its work between adjacent oscillator, even if frequency of oscillation when each fluidic oscillator works independently is different, control is synchronized by the synchronous method of the disclosure, oscillator application can be made in large-scale flow separation control, in aero-engine air intake duct, in centrifugation or axial flow compressor, high low pressure compressor changeover portion, high low pressure turbine changeover portion, flow separation at aircraft flap and empennage, effectively improve the control efficiency of flow separation, to reach raising engine operating efficiency, widen the purpose of aircraft flight envelope curve.
Description
Technical field
This disclosure relates to a kind of oscillator array more particularly to a kind of fluidic oscillator array and its frequency synchronization method.
Background technique
Active Flow Control be directly injected into flowing environment suitable perturbation mode with in system in mode phase
Coupling, is reached and is obtained high control benefit with small energy consumption, play the control action of " art is good for strength ".With traditional quilt
Flowing control method or stable state pressure-vaccum method are compared, and the active Flow Control method based on Periodic Unsteady excitation is more efficient.
The disturbance of these Periodic Unsteadies can be generated by various drivers.Compared to more other kinds of driver, fluidic oscillator
There is no any movable part, oscillating jet can be generated in exit under certain stable state inlet fluid pressure.Due to its oscillation
Flowing is entirely self-excitation and maintains certainly, the fluid behaviour of therein is fully relied on, so its reliability and robustness
With inherent advantage.And its operating frequency range is broad, from tens hertz to tens of thousands of hertz；Effluxvelocity can be realized from subsonics
Speed arrives ultrasonic variation.
The work of fluidic oscillator is entirely self-excitation and maintains certainly, if respectively worked independently, their output is penetrated
Stream will independently vibrate and respectively generate relatively random flowing.Even if each oscillator design size having the same, by
Very sensitive in geometry of its working characteristics to inner flow passage, existing fine difference will lead to it when processing and assembling
Frequency of oscillation and effluxvelocity distribution there are significant differences.
Summary of the invention
In order to solve the above-mentioned technical problem, present disclose provides a kind of fluidic oscillator array and its frequency synchronization method,
Specific implementation:
The first preferred embodiment of disclosure fluidic oscillator array:
A kind of fluidic oscillator array, the fluidic oscillator include: import, the first side wall channel, second sidewall channel,
First outlet, second outlet；
The import is connected to by the first side wall channel with first outlet；The import passes through second sidewall channel and second
Outlet；
The first side wall channel is equipped with the first feedback outlet close to first outlet；The second sidewall channel is close to second
Outlet is equipped with the second feedback outlet；The inlet communication have the first feedback answer back with second feedback answer back；
Fluidic oscillator array includes the 1st to n-th fluidic oscillator, N >=2；
First feedback outlet of n-th of fluidic oscillator is answered back with the first feedback of (n+1)th fluidic oscillator is connected to shape
At the first feedback channel；Second feedback outlet of n-th of fluidic oscillator and the second feedback of (n+1)th fluidic oscillator are answered back
Connection forms the second feedback channel；N < N；
First feedback of the 1st fluidic oscillator is answered back to be formed with the second feedback outlet of n-th fluidic oscillator
Third feedback channel；Second feedback of the 1st fluidic oscillator, which is answered back, feeds back outlet with the first of n-th fluidic oscillator
Form the 4th feedback channel.
Further, all first feedback channels, all second feedback channel, the third feedback channel,
The length of 4th feedback channel is identical, and all first feedback channel, all second feedback channels, described
Third feedback channel, the sectional area of the 4th feedback channel are identical.
Further, the first feedback outlet and the first feedback of (n+1)th fluidic oscillator of n-th of fluidic oscillator
It connects or is fixedly connected by channel-active between answering back, and/or
Second feedback outlet of n-th of fluidic oscillator and the second feedback of (n+1)th fluidic oscillator are led between answering back
It crosses channel-active connection or is fixedly connected, and/or
The second feedback outlet that first feedback of the 1st fluidic oscillator is answered back with n-th fluidic oscillator passes through channel
It is flexibly connected or is fixedly connected, and/or
The first feedback outlet that second feedback of the 1st fluidic oscillator is answered back with n-th fluidic oscillator passes through channel
It is flexibly connected or is fixedly connected.
Second of preferred embodiment of disclosure fluidic oscillator array:
A kind of fluidic oscillator array, the fluidic oscillator include: import, the first side wall channel, second sidewall channel,
First outlet, second outlet；
The import is connected to by the first side wall channel with first outlet；The import passes through second sidewall channel and second
Outlet；
The first side wall channel is equipped with the first feedback outlet close to first outlet；The second sidewall channel is close to second
Outlet is equipped with the second feedback outlet；The inlet communication have the first feedback answer back with second feedback answer back；
Fluidic oscillator array includes the 1st to n-th fluidic oscillator, N >=2；
Second feedback outlet of n-th of fluidic oscillator is answered back with the first feedback of (n+1)th fluidic oscillator is connected to shape
At the first feedback channel；Second feedback of n-th of fluidic oscillator is answered back to be exported with the first feedback of (n+1)th fluidic oscillator
Connection forms the second feedback channel；N < N；
First feedback outlet of the 1st fluidic oscillator is answered back with the first feedback of the 1st fluidic oscillator is connected to formation
Third feedback channel；Second feedback outlet of n-th fluidic oscillator is answered back with the second feedback of n-th fluidic oscillator to be connected to
Form the 4th feedback channel.
Further, the import of all fluidic oscillators is same direction, first feedback channel and the second feedback
Channel intersects.In three dimensions, not in one plane, intersection point is not present in the first feedback channel and the second feedback channel,
Therefore " intersection " described in the disclosure is that the first feedback channel and the second feedback channel are presented as " intersection " on two-dimensional projection plane
Feature；
Further, n-th of fluidic oscillator is opposite with the import of (n+1)th fluidic oscillator direction；Described first is anti-
Feedthrough road and the second feedback channel are without intersecting.
Further, the height interlaced arrangement of n-th of fluidic oscillator and (n+1)th fluidic oscillator, and
And the first import, the second import of all fluidic oscillators are respectively positioned on same control line.
Further, all first feedback channels, all second feedback channel, the third feedback channel,
The length of 4th feedback channel is identical, and all first feedback channel, all second feedback channels, described
Third feedback channel, the sectional area of the 4th feedback channel are identical.
Further, the second feedback outlet of n-th of fluidic oscillator is fed back to the first of (n+1)th fluidic oscillator
It connects or is fixedly connected by a channel-active between mouthful, and/or
Second feedback of n-th of fluidic oscillator is answered back leads between the first feedback outlet of (n+1)th fluidic oscillator
It crosses channel-active connection or is fixedly connected, and/or
First feedback outlet of the 1st fluidic oscillator answers back to be connected to the first feedback of the 1st fluidic oscillator to be led to
Road is flexibly connected or is fixedly connected, and/or
Second feedback outlet of n-th fluidic oscillator and the second feedback of n-th fluidic oscillator answer back and pass through channel
It is flexibly connected or is fixedly connected.
The first preferred embodiment of disclosure fluidic oscillator array frequency synchronization method:
A kind of frequency synchronization method of fluidic oscillator array, the flow separation range controlled as needed, selection are corresponding
The fluidic oscillator of quantity constitutes the fluidic oscillator array of the first preferred embodiment of disclosure fluidic oscillator array；
A power stream is projected from the import of N number of fluidic oscillator while being entered in all fluidic oscillators；
When power stream from the first side wall channel of n-th fluidic oscillator or second sidewall channel through first outlet or second
When outlet is projected, flow through part streams via the first feedback outlet or the second feedback outlet of n-th of fluidic oscillator
The first feedback that its first feedback channel or the second feedback channel flow to (n+1)th fluidic oscillator is answered back or the second feedback is answered back
It projects；The pressure that the first feedback of (n+1)th fluidic oscillator is answered back at this time or the second feedback is answered back increases, and power stream is forced to pass through
Its second sidewall channel or the first side wall channel are projected from second outlet or first outlet；
When power stream is from the first side wall channel of n-th fluidic oscillator or second sidewall channel from first outlet or second
When outlet is projected, flow through part streams via the first feedback outlet or the second feedback outlet of n-th fluidic oscillator
4th feedback channel stream or third feedback channel are answered back to the second feedback of the 1st fluidic oscillator or the first feedback is answered back and penetrated
Out, the pressure that the second feedback at this time in the 1st fluidic oscillator is answered back or the first feedback is answered back increases, and forces the 1st fluid
Power stream in oscillator is projected through the first side wall channel or second sidewall channel from first outlet or second outlet；
Power stream alternately leaves from the first outlet or second outlet of each fluidic oscillator；Each fluidic oscillator frequency
It is synchronous.
Further, be distributed according to required array synchronization frequency and/or according to the hunting speed of outlet jet, adjust into
The pressure size of mouth.
The another embodiment of synchronous method as the disclosure:
A kind of frequency synchronization method of fluidic oscillator array, the flow separation range controlled as needed, selection are corresponding
The fluidic oscillator of quantity constitutes the fluidic oscillator array of second of preferred embodiment of disclosure fluidic oscillator array；
A power stream is projected from the import of N number of fluidic oscillator while being entered in all fluidic oscillators；
When power stream is projected through the first side wall channel from first outlet from n-th of fluidic oscillator, due to first outlet
Resistance limitation will make part streams flow through the first feedback channel flow direction via the first feedback outlet of n-th of fluidic oscillator
The second of (n-1)th fluidic oscillator feeds back injection of answering back；The pressure that second feedback of (n-1)th fluidic oscillator is answered back at this time
Increase, power stream is forced to project through its first side wall channel from first outlet；
When second sidewall channel of the power stream through n-th of fluidic oscillator is projected from second outlet, due to second outlet
Resistance limitation will make part streams flow through the second feedback channel flow direction via the second feedback outlet of n-th of fluidic oscillator
The first of (n+1)th fluidic oscillator feeds back injection of answering back；The pressure that first feedback of (n+1)th fluidic oscillator is answered back at this time
Increase, power stream is forced to project through its second sidewall channel from second outlet；
When the first side wall channel of the power stream through the 1st fluidic oscillator is projected from its first outlet, go out due to first
The limitation of mouthful resistance, so that part streams are answered back injection through third feedback channel from its first feedback, the 1st fluidic oscillator at this time
The first pressure for answering back of feedback increase, force power stream to project through its second sidewall channel from second outlet；
When power stream, which flows through the second sidewall channel of n-th fluidic oscillator, to be projected from its second outlet, due to its
Two resistances to flow output limitation, so that part streams are answered back injections through the 4th feedback channel from its second feedback, n-th fluid vibration at this time
The pressure increase that the second feedback of device is answered back is swung, power stream is forced to project through its first side wall channel from first outlet；
Power stream alternately leaves from the first outlet or second outlet of each fluidic oscillator；Each fluidic oscillator frequency
It is synchronous.
Further, be distributed according to required array synchronization frequency and/or according to the hunting speed of outlet jet, adjust into
The pressure size of mouth.
Detailed description of the invention
Attached drawing shows the illustrative embodiments of the disclosure, and it is bright together for explaining the principles of this disclosure,
Which includes these attached drawings to provide further understanding of the disclosure, and attached drawing is included in the description and constitutes this
Part of specification.
Fig. 1 is the inner flow passage structural schematic diagram of the fluidic oscillator of the disclosure；
Fig. 2 is the array structure schematic diagram that embodiment one is applied to two fluidic oscillators；
Fig. 3 is the array structure schematic diagram that embodiment one is applied to four fluidic oscillators；
Fig. 4 is the array structure schematic diagram that embodiment three is applied to two fluidic oscillators；
Fig. 5 is the array structure schematic diagram that embodiment three is applied to four fluidic oscillators；
Fig. 6 is the array structure schematic diagram that example IV is applied to four fluidic oscillators；
Fig. 7 is the array structure schematic diagram that embodiment five is applied to four fluidic oscillators；
Import 1, the first side wall channel 21, second sidewall channel 22, first outlet 31, second outlet 32, first feed back out
Mouthful 41, second the 42, first feedback of feedback outlet the 51, second feedback of answering back is answered back the 52, first feedback channel 61, the second feedback channel
62, third feedback channel 63, the 4th feedback channel 64.
Specific embodiment
The disclosure is described in further detail with embodiment with reference to the accompanying drawing.It is understood that this place
The specific embodiment of description is only used for explaining related content, rather than the restriction to the disclosure.It also should be noted that being
Convenient for description, part relevant to the disclosure is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the disclosure can
To be combined with each other.The disclosure is described in detail below with reference to the accompanying drawings and in conjunction with embodiment.
Embodiment one
A kind of fluidic oscillator array, the fluidic oscillator include: that import 1, the first side wall channel 21, second sidewall are logical
Road 22, first outlet 31, second outlet 32；The import 1 is connected to by the first side wall channel 32 with first outlet 31；It is described into
Mouth 1 is connected to by second sidewall channel 22 with second outlet 32；The first side wall channel 21 is equipped with the close to first outlet 31
One feedback outlet 41；The second sidewall channel 32 is equipped with the second feedback outlet 42 close to second outlet 32；The import 1 is connected to
Have the first feedback answer back 51 and second feedback answer back 52.
In the present embodiment, the work of above-mentioned fluidic oscillator is based on Ke Angda effect, and jet stream enters fluid vibration from import
To be attached to after swinging in device the first side wall channel and second sidewall channel one of those, this depend on jet stream primary condition or
Person is the result to the specific action of power stream.If being not provided with feedback channel, and first outlet and second outlet are very big,
The jet stream for then arriving the first side wall channel or second sidewall channel steady flow and will leave from first outlet or second outlet.Benefit
With feedback channel, when power stream is attached to the first side wall channel, since the resistance of corresponding first outlet limits, the one of fluid
Portion adjutant can enter feedback channel, and lead to the pressure increase in oscillator the first side wall channel, this pressure increase, in addition master penetrates
The lateral disturbance of stream causes jet flow alternation to second sidewall channel, after the switching of power stream direction, in second side of oscillator
Wall channel generates identical phenomenon, and leads to self sustained oscillation behavior, and first outlet and second outlet are alternately left in pulse.
The fluidic oscillator array of the present embodiment includes the 1st to n-th fluidic oscillator, N >=2；
First feedback outlet 41 of n-th of fluidic oscillator and the first of (n+1)th fluidic oscillator feed back 51 companies of answering back
It is logical to form the first feedback channel 61；Second feedback of n-th of fluidic oscillator exports the second of 42 and (n+1)th fluidic oscillator
It feeds back 52 connections of answering back and forms the second feedback channel 62；N < N；
First feedback of the 1st fluidic oscillator is answered back to be formed with the second feedback outlet of n-th fluidic oscillator
Third feedback channel 63；The first feedback outlet that second feedback of the 1st fluidic oscillator is answered back with n-th fluidic oscillator connects
It is logical to form the 4th feedback channel 64.
Include the case where two fluidic oscillators in array as N=2 referring to Fig. 2；1st fluidic oscillator A1's
First feedback outlet 41 and the first feedback of the 2nd fluidic oscillator A2, which are answered back, 51 is connected to the first feedback channel 61 of formation；1st
The second feedback outlet 42 of fluidic oscillator A1 and the second feedback of the 2nd fluidic oscillator A2, which are answered back, 52 is connected to formation second instead
Feedthrough road 62；
First feedback of the 1st fluidic oscillator, which is answered back, 51 to be exported 42 with the second feedback of the 2nd fluidic oscillator and is connected to
Form third feedback channel 63；The second of 1st fluidic oscillator feeds back first feedback of 52 and the 2nd fluidic oscillators of answering back
41 connection of outlet forms the 4th feedback channel 64.
Include the case where four fluidic oscillators in array as N=4 referring to Fig. 3；
The first feedback of 1st fluidic oscillator A1, which exports the first of 41 and the 2nd fluidic oscillator A2, to be fed back and answers back 51
Connection forms the first feedback channel 61；The second feedback of 1st fluidic oscillator A1 exports 42 and the 2nd fluidic oscillator A2's
Second, which feeds back 52 connections of answering back, forms the second feedback channel 62；
The first feedback of 2nd fluidic oscillator A1 exports the first of 41 and the 3rd fluidic oscillators and feeds back 51 companies of answering back
It is logical to form the first feedback channel；The second of the second 42 and the 3rd fluidic oscillator A3 in feedback outlet of 2nd fluidic oscillator A1
It feeds back 52 connections of answering back and forms the second feedback channel；
The first feedback of 3rd fluidic oscillator A3, which exports the first of 41 and the 4th fluidic oscillator A4, to be fed back and answers back 51
Connection forms the first feedback channel；The second feedback of 3rd fluidic oscillator A3 exports the of 42 and the 4th fluidic oscillator A4
Two, which feed back 52 connections of answering back, forms the second feedback channel
The first of 1st fluidic oscillator A1 feeds back the second feedback outlet 42 for 51 and the 4th fluidic oscillator A4 that answer back
Connection forms third feedback channel 63；The second feedback of 1st fluidic oscillator A1 answers back 52 and the 4th fluidic oscillator A4's
First feedback outlet, 41 connection forms the 4th feedback channel 64.
In the present embodiment, all first feedback channel, whole second feedback channels, third feedback are logical
Road, the length of the 4th feedback channel are identical, and whole first feedback channels, all second feedback channel,
The third feedback channel, the sectional area of the 4th feedback channel are identical.
In the present embodiment, the first feedback outlet and the first feedback of (n+1)th fluidic oscillator of n-th of fluidic oscillator
It connects or is fixedly connected by channel-active between answering back, and/or
Second feedback outlet of n-th of fluidic oscillator and the second feedback of (n+1)th fluidic oscillator are led between answering back
It crosses channel-active connection or is fixedly connected, and/or
The second feedback outlet that first feedback of the 1st fluidic oscillator is answered back with n-th fluidic oscillator passes through channel
It is flexibly connected or is fixedly connected, and/or
The first feedback outlet that second feedback of the 1st fluidic oscillator is answered back with n-th fluidic oscillator passes through channel
It is flexibly connected or is fixedly connected.
In the present embodiment, movable connection method can be attached using connection structures such as screw thread/bayonet connections, fixed to connect
The mode of connecing can be realized using welding, casting or directly processing in oscillator array corresponding feedback channel.This implementation is led to
Road can be realized by the gas channels of equal length.
Embodiment two:
Present embodiment discloses a kind of frequency synchronization method of fluidic oscillator array, which controls as needed
Flow separation range, select respective numbers fluidic oscillator constitute disclosure fluidic oscillator array embodiment one stream
Oscillation body device array；
A power stream is projected, make it from the import of N number of fluidic oscillator while being entered in all fluidic oscillators；
When power stream from the first side wall channel of n-th fluidic oscillator or second sidewall channel through first outlet or second
When outlet is projected, flow through part streams via the first feedback outlet or the second feedback outlet of n-th of fluidic oscillator
The first feedback that its first feedback channel or the second feedback channel flow to (n+1)th fluidic oscillator is answered back or the second feedback is answered back
It projects；The pressure that the first feedback of (n+1)th fluidic oscillator is answered back at this time or the second feedback is answered back increases, and power stream is forced to pass through
Its second sidewall channel or the first side wall channel are projected from second outlet or second outlet；
When power stream is from the first side wall channel of n-th fluidic oscillator or second sidewall channel from first outlet or second
When outlet is projected, flow through part streams via the first feedback outlet or the second feedback outlet of n-th fluidic oscillator
4th feedback channel stream or third feedback channel are answered back to the second feedback of the 1st fluidic oscillator or the first feedback is answered back and penetrated
Out, the pressure that the second feedback at this time in the 1st fluidic oscillator is answered back or the first feedback is answered back increases, and forces the 1st fluid
Power stream in oscillator is projected through the first side wall channel or second sidewall channel from first outlet or second outlet；
Power stream alternately leaves from the first outlet or second outlet of each fluidic oscillator；Each fluidic oscillator frequency
It is synchronous.
From above-mentioned synchronous method it is found that due to the feedback of the 1st fluidic oscillator answer back it is anti-with n-th fluidic oscillator
A mouthful connection is fed out, this makes, and after oscillator array series connection, jet stream becomes larger from the period that two outlets are alternately left, and therefore, uses
After above-mentioned fluidic oscillator oscillation scheme and synchronous method, array synchronization frequency is substantially less than when fluidic oscillator works independently
Frequency.The present embodiment can be by the quantity of oscillator in change array, to expand the range of flow separation control；Meanwhile
According to the above method, by the pressure for changing import, thus it is possible to vary the frequency of array synchronization work and the oscillation speed of outlet jet
Degree distribution.
Embodiment three:
A kind of fluidic oscillator array, the fluidic oscillator include: import, the first side wall channel, second sidewall channel,
First outlet, second outlet；The import is connected to by the first side wall channel with first outlet；The import passes through second sidewall
Channel is connected to second outlet；The first side wall channel is equipped with the first feedback outlet close to first outlet；The second sidewall
Channel is equipped with the second feedback outlet close to second outlet；The inlet communication have the first feedback answer back with second feedback answer back；
Referring to Fig. 4 and Fig. 5, the fluidic oscillator array of the present embodiment includes the 1st to n-th fluidic oscillator, N >=2；
Second feedback outlet 42 of n-th of fluidic oscillator and the first of (n+1)th fluidic oscillator feed back 51 companies of answering back
It is logical to form the first feedback channel 61；Second feedback of n-th fluidic oscillator answers back the first of 52 and (n+1)th fluidic oscillator
41 connection of feedback outlet forms the second feedback channel 62；N < N；
First feedback outlet 41 of the 1st fluidic oscillator, which feeds back to answer back with the first of the 1st fluidic oscillator, 51 to be connected to
Form third feedback channel 63；The the second feedback outlet 42 and the second feedback of n-th fluidic oscillator of n-th fluidic oscillator
52 connections of answering back form the 4th feedback channel 64.
Referring to Fig. 4 and Fig. 5, in the present embodiment, the import of all fluidic oscillators can be arranged according to application scenarios needs
For same direction, at this point, the first feedback channel of neighboring oscillation device and the second feedback channel intersect, the feedback channels of two intersections
It cannot be in a plane.
Example IV:
Referring to Fig. 6, the present embodiment and embodiment three are essentially identical, the difference is that: in order to enable all feedbacks are logical
In a plane, the fluidic oscillator of the present embodiment can be arranged using opposed mode in road, and n-th of fluidic oscillator and n-th+
The import of 1 fluidic oscillator is towards on the contrary；The synchronization that both can guarantee all fluidic oscillator frequencies in array in this way, also can
All feedback channels are realized in a plane and without intersection, i.e., described first feedback channel and the second feedback channel are without intersecting.
Embodiment five:
Referring to Fig. 7, the present embodiment is essentially identical with example IV, the difference is that: in order to enable all feedbacks are logical
Road does not intersect, and the outlet of all fluidic oscillators is located on same control line, and can be realized all fluidic oscillators
Frequency Synchronization, the present embodiment can also use arrangement as shown in FIG. 6, it may be assumed that n-th of fluidic oscillator and (n+1)th
The height interlaced arrangement of a fluidic oscillator, and the first import, the second import of all fluidic oscillators are respectively positioned on together
On one control line.
As the preferred embodiment of embodiment three, example IV, embodiment five, all first feedback is logical in an array
Road, all second feedback channel, the third feedback channel, the length of the 4th feedback channel are identical, and all
The section of first feedback channel, all second feedback channel, the third feedback channel, the 4th feedback channel
Product is identical.
Second feedback outlet of n-th of fluidic oscillator and the first feedback of (n+1)th fluidic oscillator are led between answering back
It crosses channel-active connection or is fixedly connected and/or the second feedback of n-th fluidic oscillator is answered back and (n+1)th fluid shakes
Swing device first feedback outlet between by a channel-active connect or be fixedly connected and/or the 1st fluidic oscillator first
Feedback outlet, which feeds back to answer back with the first of the 1st fluidic oscillator, to be connected to channel-active and connect or be fixedly connected and/or N
Second feedback outlet of a fluidic oscillator is answered back with the second feedback of n-th fluidic oscillator to be connect or is consolidated by channel-active
Fixed connection.Being flexibly connected can be the same as example 1 with the technical solution being fixedly connected.
Embodiment six:
A kind of frequency synchronization method of fluidic oscillator array, embodiment three including disclosure fluidic oscillator array,
Any fluidic oscillator array of example IV, embodiment five；
A power stream is projected, make it from the import of N number of fluidic oscillator while being entered in all fluidic oscillators；
When power stream is projected through the first side wall channel from first outlet from n-th of fluidic oscillator, due to first outlet
Resistance limitation will make part streams flow through the first feedback channel flow direction via the first feedback outlet of n-th of fluidic oscillator
The second of (n-1)th fluidic oscillator feeds back injection of answering back；The pressure that second feedback of (n-1)th fluidic oscillator is answered back at this time
Increase, power stream is forced to project through its first side wall channel from first outlet；
When second sidewall channel of the power stream through n-th of fluidic oscillator is projected from second outlet, due to second outlet
Resistance limitation will make part streams flow through the second feedback channel flow direction via the second feedback outlet of n-th of fluidic oscillator
The first of (n+1)th fluidic oscillator feeds back injection of answering back；The pressure that first feedback of (n+1)th fluidic oscillator is answered back at this time
Increase, power stream is forced to project through its second sidewall channel from second outlet；
When the first side wall channel of the power stream through the 1st fluidic oscillator is projected from its first outlet, go out due to first
The limitation of mouthful resistance, so that part streams are answered back injection through third feedback channel from its first feedback, the 1st fluidic oscillator at this time
The first pressure for answering back of feedback increase, force power stream to project through its second sidewall channel from second outlet；
When power stream, which flows through the second sidewall channel of n-th fluidic oscillator, to be projected from its second outlet, due to its
Two resistances to flow output limitation, so that part streams are answered back injections through the 4th feedback channel from its second feedback, n-th fluid vibration at this time
The pressure increase that the second feedback of device is answered back is swung, power stream is forced to project through its first side wall channel from first outlet；
Power stream alternately leaves from the first outlet or second outlet of each fluidic oscillator；Each fluidic oscillator frequency
It is synchronous.
It, can also be by the quantity of fluidic oscillator in change array, to expand flow separation control in the present embodiment
Range.
From above-mentioned synchronous method it is found that the first feedback due to the 1st fluidic oscillator exports and the 1st fluidic oscillator
The first feedback connection of answering back form third feedback channel；Second feedback outlet of n-th fluidic oscillator shakes with n-th fluid
The second feedback for swinging device, which answers back to be connected to, forms the 4th feedback channel.This makes, and after oscillator array series connection, jet stream is exported from two
The period that alternating is left is basically unchanged, therefore, after vibrating scheme and synchronous method using above-mentioned fluidic oscillator, array synchronization frequency
Frequency when rate and fluidic oscillator work independently is essentially identical (error is no more than 3%).
According to above four embodiments, the fluidic oscillator array frequency synchronization method of the disclosure, can will contain there are two
And in the array of the above fluidic oscillator all fluidic oscillator frequency of oscillation it is synchronous, and adjacent oscillator when its work
Between there is fixed phase difference, even if frequency of oscillation when each fluidic oscillator works independently is different, including due to processing
It is different with each fluidic oscillator working frequency caused by rigging error, control is synchronized by the synchronous method of the disclosure,
Oscillator application can be made in large-scale flow separation control, as in aero-engine air intake duct, centrifugation or axial flow compressor
Flow separation at interior, high low pressure compressor changeover portion, high low pressure turbine changeover portion, aircraft flap and empennage, effectively improves
The control efficiency of flow separation widens the purpose of aircraft flight envelope curve to reach raising engine operating efficiency.
In the description of this specification, term " first ", " second ", " third ", " the 4th " are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " the
One ", " second ", " third ", the feature of " the 4th " can explicitly or implicitly include at least one of the features.
It will be understood by those of skill in the art that above embodiment is used for the purpose of clearly demonstrating the disclosure, and simultaneously
Non- be defined to the scope of the present disclosure.For those skilled in the art, may be used also on the basis of disclosed above
To make other variations or modification, and these variations or modification are still in the scope of the present disclosure.
Claims (13)
1. a kind of fluidic oscillator array, the fluidic oscillator includes: import, the first side wall channel, second sidewall channel,
One outlet, second outlet；
The import is connected to by the first side wall channel with first outlet；The import passes through second sidewall channel and second outlet
Connection；
The first side wall channel is equipped with the first feedback outlet close to first outlet；The second sidewall channel is close to second outlet
Equipped with the second feedback outlet；The inlet communication have the first feedback answer back with second feedback answer back；
It is characterised in that it includes the 1st to n-th fluidic oscillator, N >=2；
First feedback outlet of n-th fluidic oscillator, which answers back to be connected to the first feedback of (n+1)th fluidic oscillator, forms the
One feedback channel；Second feedback outlet of n-th of fluidic oscillator is answered back with the second feedback of (n+1)th fluidic oscillator to be connected to
Form the second feedback channel；N < N；
First feedback of the 1st fluidic oscillator, which is answered back, forms third with the second feedback outlet of n-th fluidic oscillator
Feedback channel；Second feedback of the 1st fluidic oscillator is answered back to be formed with the first feedback outlet of n-th fluidic oscillator
4th feedback channel.
2. a kind of fluidic oscillator array as described in claim 1, it is characterised in that: all first feedback channels, complete
Second feedback channel described in portion, the third feedback channel, the length of the 4th feedback channel are identical, and all described the
The sectional area phase of one feedback channel, all second feedback channel, the third feedback channel, the 4th feedback channel
Together.
3. a kind of fluidic oscillator array as claimed in claim 1 or 2, it is characterised in that: the first of n-th of fluidic oscillator
Feedback outlet is connected or is fixedly connected by channel-active between answering back with the first feedback of (n+1)th fluidic oscillator, and/or
By logical between second feedback of n-th of fluidic oscillator exports and the second feedback of (n+1)th fluidic oscillator is answered back
Road is flexibly connected or is fixedly connected, and/or
The second feedback outlet that first feedback of the 1st fluidic oscillator is answered back with n-th fluidic oscillator passes through channel-active
It connects or is fixedly connected, and/or
The first feedback outlet that second feedback of the 1st fluidic oscillator is answered back with n-th fluidic oscillator passes through channel-active
It connects or is fixedly connected.
4. a kind of fluidic oscillator array, the fluidic oscillator includes: import, the first side wall channel, second sidewall channel,
One outlet, second outlet；
The import is connected to by the first side wall channel with first outlet；The import passes through second sidewall channel and second outlet
Connection；
The first side wall channel is equipped with the first feedback outlet close to first outlet；The second sidewall channel is close to second outlet
Equipped with the second feedback outlet；The inlet communication have the first feedback answer back with second feedback answer back；
It is characterised in that it includes the 1st to n-th fluidic oscillator, N >=2；
Second feedback outlet of n-th fluidic oscillator, which answers back to be connected to the first feedback of (n+1)th fluidic oscillator, forms the
One feedback channel；The first feedback outlet that second feedback of n-th of fluidic oscillator is answered back with (n+1)th fluidic oscillator
Form the second feedback channel；N < N；
It answers back to be connected to form third with the first feedback of the 1st fluidic oscillator in first feedback outlet of the 1st fluidic oscillator
Feedback channel；Second feedback outlet of n-th fluidic oscillator is answered back with the second feedback of n-th fluidic oscillator is connected to formation
4th feedback channel.
5. a kind of fluidic oscillator array as claimed in claim 4, it is characterised in that: the import of all fluidic oscillators is
Same direction, first feedback channel and the second feedback channel intersect.
6. a kind of fluidic oscillator array as claimed in claim 4, it is characterised in that: n-th of fluidic oscillator and (n+1)th
The import of fluidic oscillator is towards on the contrary；First feedback channel and the second feedback channel are without intersecting.
7. a kind of fluidic oscillator array as claimed in claim 6, it is characterised in that: n-th of fluidic oscillator and n-th
The height interlaced arrangement of+1 fluidic oscillator, and the first import, the second import of all fluidic oscillators are respectively positioned on
On same control line.
8. such as a kind of described in any item fluidic oscillator arrays of claim 4-7, it is characterised in that: all first feedbacks
Channel, all second feedback channel, the third feedback channel, the length of the 4th feedback channel are identical, and complete
First feedback channel described in portion, all second feedback channel, the third feedback channel, the 4th feedback channel are cut
Area is identical.
9. such as a kind of described in any item fluidic oscillator arrays of claim 4-7, it is characterised in that: n-th of fluidic oscillator
The second feedback outlet and (n+1)th fluidic oscillator the first feedback answer back between connected or fixed connect by a channel-active
It connects, and/or
Second feedback of n-th of fluidic oscillator is answered back between the first feedback outlet of (n+1)th fluidic oscillator by one
Channel-active is connected or is fixedly connected, and/or
First feedback outlet of the 1st fluidic oscillator is answered back with the first feedback of the 1st fluidic oscillator was connected to channel work
Dynamic connection is fixedly connected, and/or
Second feedback outlet of n-th fluidic oscillator and the second feedback of n-th fluidic oscillator answer back and pass through channel-active
It connects or is fixedly connected.
10. a kind of frequency synchronization method of fluidic oscillator array, it is characterised in that: the flow separation model controlled as needed
It encloses, the fluidic oscillator of respective numbers is selected to constitute fluidic oscillator array as described in any one of claims 1-3；
A power stream is projected from the import of N number of fluidic oscillator while being entered in all fluidic oscillators；
When power stream from the first side wall channel of n-th fluidic oscillator or second sidewall channel through first outlet or second outlet
When injection, will make part streams via the first feedback outlet or the second feedback outlet of n-th fluidic oscillator flow through its
The first feedback that one feedback channel or the second feedback channel flow to (n+1)th fluidic oscillator is answered back or the second feedback is answered back and penetrated
Out；The pressure that the first feedback of (n+1)th fluidic oscillator is answered back at this time or the second feedback is answered back increases, and forces power stream through it
Second sidewall channel or the first side wall channel are projected from second outlet or second outlet；
When power stream is from the first side wall channel of n-th fluidic oscillator or second sidewall channel from first outlet or second outlet
When injection, part streams will be made to flow through the 4th via the first feedback outlet or the second feedback outlet of n-th fluidic oscillator
Injection that feedback channel stream or third feedback channel are answered back to the second feedback of the 1st fluidic oscillator or the first feedback is answered back, this
When the 1st fluidic oscillator in the second feedback answer back or the first pressure for answering back of feedback increases, force the 1st fluidic oscillator
Interior power stream is projected through the first side wall channel or second sidewall channel from first outlet or second outlet；
Power stream alternately leaves from the first outlet or second outlet of each fluidic oscillator；Each fluidic oscillator frequency is same
Step.
11. a kind of frequency synchronization method of fluidic oscillator array as claimed in claim 10, it is characterised in that: according to required
Array synchronization frequency and/or according to the hunting speed of outlet jet be distributed, adjust the pressure size of import.
12. a kind of frequency synchronization method of fluidic oscillator array, it is characterised in that: the flow separation model controlled as needed
It encloses, the fluidic oscillator of respective numbers is selected to constitute such as the described in any item fluidic oscillator arrays of claim 4-9；
Projecting a power stream makes it from the import of N number of fluidic oscillator while entering in all fluidic oscillators；
When power stream is projected through the first side wall channel from first outlet from n-th of fluidic oscillator, due to first outlet resistance
Limitation will make part streams flow through the first feedback channel via the first feedback outlet of n-th of fluidic oscillator and flow to (n-1)th
The second of a fluidic oscillator feeds back injection of answering back；The pressure that the second feedback of (n-1)th fluidic oscillator is answered back at this time increases,
Power stream is forced to project through its first side wall channel from first outlet；
When second sidewall channel of the power stream through n-th of fluidic oscillator is projected from second outlet, due to second outlet resistance
Limitation will make part streams flow through the second feedback channel via the second feedback outlet of n-th of fluidic oscillator and flow to (n+1)th
The first of a fluidic oscillator feeds back injection of answering back；The pressure that the first feedback of (n+1)th fluidic oscillator is answered back at this time increases,
Power stream is forced to project through its second sidewall channel from second outlet；
When the first side wall channel of the power stream through the 1st fluidic oscillator is projected from its first outlet, since first outlet hinders
Power limit, so that part streams are answered back injection through third feedback channel from its first feedback, the of the 1st fluidic oscillator at this time
The pressure that one feedback is answered back increases, and power stream is forced to project through its second sidewall channel from second outlet；
When power stream, which flows through the second sidewall channel of n-th fluidic oscillator, to be projected from its second outlet, since it second goes out
The limitation of mouthful resistance, so that part streams are answered back injection through the 4th feedback channel from its second feedback, n-th fluidic oscillator at this time
The second pressure for answering back of feedback increase, force power stream to project through its first side wall channel from first outlet；
Power stream alternately leaves from the first outlet or second outlet of each fluidic oscillator；Each fluidic oscillator frequency is same
Step.
13. a kind of frequency synchronization method of fluidic oscillator array as claimed in claim 12, it is characterised in that: according to required
Array synchronization frequency and/or according to the hunting speed of outlet jet be distributed, adjust the pressure size of import.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758278.8A CN110449309B (en) | 2019-08-16 | 2019-08-16 | Fluid oscillator array and frequency synchronization method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910758278.8A CN110449309B (en) | 2019-08-16 | 2019-08-16 | Fluid oscillator array and frequency synchronization method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110449309A true CN110449309A (en) | 2019-11-15 |
| CN110449309B CN110449309B (en) | 2020-06-26 |
Family
ID=68487108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910758278.8A Active CN110449309B (en) | 2019-08-16 | 2019-08-16 | Fluid oscillator array and frequency synchronization method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110449309B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623505A (en) * | 2020-05-25 | 2020-09-04 | 太原理工大学 | Self-oscillation jet flow type mixing-increasing heat exchange air outlet device |
| CN111810295A (en) * | 2020-07-17 | 2020-10-23 | 中国航空发动机研究院 | Flow separation active control structure, method and application |
| CN111810454A (en) * | 2020-07-17 | 2020-10-23 | 中国航空发动机研究院 | Casing, compressor and stability expanding method based on self-circulation oscillation jet flow |
| CN113074047A (en) * | 2021-03-04 | 2021-07-06 | 南京航空航天大学 | S-shaped air inlet channel rotational flow distortion flow control device based on fluid oscillator |
| CN113404747A (en) * | 2021-06-29 | 2021-09-17 | 上海交通大学 | Outlet same-phase control and frequency decoupling oscillator |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5639022A (en) * | 1994-11-30 | 1997-06-17 | The United States Of America As Represented By The Secretary Of The Navy | Supersonic fluid dispersing injector |
| RU2286582C2 (en) * | 2004-12-10 | 2006-10-27 | 4 Центральный Научно-исследовательский институт Минобороны России | Fluid-jet accelerometer with digital output |
| WO2008135967A1 (en) * | 2007-05-02 | 2008-11-13 | Ramot At Tel Aviv University Ltd. | Apparatus and method for oscillating fluid jets |
| US7481119B2 (en) * | 2006-11-22 | 2009-01-27 | National Tsing Hua University | Micro-fluidic oscillator having a sudden expansion region at the nozzle outlet |
| DE602006001040T2 (en) * | 2005-08-10 | 2009-07-02 | General Electric Co. | Method and system for current regulation with fluidic oscillators |
| CN106368609A (en) * | 2016-11-09 | 2017-02-01 | 西南石油大学 | Jet flow oscillating tool |
| CN106662328A (en) * | 2014-09-12 | 2017-05-10 | 西门子公司 | Burner comprising a fluidic oscillator, for a gas turbine, and a gas turbine comprising at least one such burner |
| CN206526761U (en) * | 2017-01-14 | 2017-09-29 | 辽宁工业大学 | One kind is based on Piezoelectric Driving integrated form micro-mixer |
| US9789496B2 (en) * | 2013-03-06 | 2017-10-17 | The United States Of America As Represented By The Administrator Of Nasa | Fluidic oscillator array for synchronized oscillating jet generation |
| CN107750288A (en) * | 2015-06-18 | 2018-03-02 | 塞罗斯有限公司 | With the apparatus and method of ozone bubbles processing base material |
| CN108722694A (en) * | 2018-04-12 | 2018-11-02 | 南京航空航天大学 | A kind of supersonic jet oscillator |
| US20190145441A1 (en) * | 2017-10-11 | 2019-05-16 | Ohio State Innovation Foundation | Frequency-synchronized fluidic oscillator array |
-
2019
- 2019-08-16 CN CN201910758278.8A patent/CN110449309B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5639022A (en) * | 1994-11-30 | 1997-06-17 | The United States Of America As Represented By The Secretary Of The Navy | Supersonic fluid dispersing injector |
| RU2286582C2 (en) * | 2004-12-10 | 2006-10-27 | 4 Центральный Научно-исследовательский институт Минобороны России | Fluid-jet accelerometer with digital output |
| DE602006001040T2 (en) * | 2005-08-10 | 2009-07-02 | General Electric Co. | Method and system for current regulation with fluidic oscillators |
| US7481119B2 (en) * | 2006-11-22 | 2009-01-27 | National Tsing Hua University | Micro-fluidic oscillator having a sudden expansion region at the nozzle outlet |
| WO2008135967A1 (en) * | 2007-05-02 | 2008-11-13 | Ramot At Tel Aviv University Ltd. | Apparatus and method for oscillating fluid jets |
| US9789496B2 (en) * | 2013-03-06 | 2017-10-17 | The United States Of America As Represented By The Administrator Of Nasa | Fluidic oscillator array for synchronized oscillating jet generation |
| CN106662328A (en) * | 2014-09-12 | 2017-05-10 | 西门子公司 | Burner comprising a fluidic oscillator, for a gas turbine, and a gas turbine comprising at least one such burner |
| CN107750288A (en) * | 2015-06-18 | 2018-03-02 | 塞罗斯有限公司 | With the apparatus and method of ozone bubbles processing base material |
| CN106368609A (en) * | 2016-11-09 | 2017-02-01 | 西南石油大学 | Jet flow oscillating tool |
| CN206526761U (en) * | 2017-01-14 | 2017-09-29 | 辽宁工业大学 | One kind is based on Piezoelectric Driving integrated form micro-mixer |
| US20190145441A1 (en) * | 2017-10-11 | 2019-05-16 | Ohio State Innovation Foundation | Frequency-synchronized fluidic oscillator array |
| CN108722694A (en) * | 2018-04-12 | 2018-11-02 | 南京航空航天大学 | A kind of supersonic jet oscillator |
Non-Patent Citations (1)
| Title |
|---|
| 雷晗、单勇等: "超声速流体振荡器流动特性数值研究", 《重庆理工大学学报（自然科学）》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623505A (en) * | 2020-05-25 | 2020-09-04 | 太原理工大学 | Self-oscillation jet flow type mixing-increasing heat exchange air outlet device |
| CN111810295A (en) * | 2020-07-17 | 2020-10-23 | 中国航空发动机研究院 | Flow separation active control structure, method and application |
| CN111810454A (en) * | 2020-07-17 | 2020-10-23 | 中国航空发动机研究院 | Casing, compressor and stability expanding method based on self-circulation oscillation jet flow |
| CN111810295B (en) * | 2020-07-17 | 2022-03-04 | 中国航空发动机研究院 | Flow separation active control structure, method and application |
| CN113074047A (en) * | 2021-03-04 | 2021-07-06 | 南京航空航天大学 | S-shaped air inlet channel rotational flow distortion flow control device based on fluid oscillator |
| CN113404747A (en) * | 2021-06-29 | 2021-09-17 | 上海交通大学 | Outlet same-phase control and frequency decoupling oscillator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110449309B (en) | 2020-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110449309A (en) | A kind of fluidic oscillator array and its frequency synchronization method | |
| US10267515B2 (en) | Fractal fluid passages apparatus | |
| US20130291981A1 (en) | Fluid actuator for influencing the flow along a flow surface, as well as blow-out device and flow body comprising a like fluid actuator | |
| US8348200B2 (en) | Synthetic jet actuator system and related methods | |
| CN101975653B (en) | Supersonic-speed axisymmetric mixing layer wind tunnel | |
| CN103079949B (en) | For generating the bubble of fluid to be reduced in equipment of the resistance on the hull of ship and uses thereof, for comprising the hull of the ship of the device of band microfluidic device and reducing the method for the resistance on this hull | |
| CN101139967B (en) | Fuel injection device | |
| US8136767B2 (en) | Method and system for flow control with arrays of dual bimorph synthetic jet fluidic actuators | |
| CN103314220B (en) | Affect the fluid actuator of the stream along flow surface, spraying device and liquid | |
| CN102483080B (en) | For producing fluid actuator, the blowoff comprising this fluid actuator and the pneumatic body for being equipped with this blowoff that pulsed discharges air-flow in the envelope air-flow of pneumatic body | |
| US7780151B2 (en) | Mixer assembly | |
| EP1894616A1 (en) | Static mixing device | |
| EP2157306A2 (en) | Pulse detonation/deflagration apparatus and method for enhancing the production of detonation to deflagration waves | |
| CN105051457B (en) | Burner and gas turbine | |
| JPH07509041A (en) | Injection system with concentric slits and its injection elements | |
| US20140145001A1 (en) | Method and apparatus for nozzle thrust vectoring | |
| US5343698A (en) | Hexagonal cluster nozzle for a rocket engine | |
| CA2435173A1 (en) | Method and apparatus for modulating flow separation | |
| JPH10205755A (en) | Control of cooling flow rate for high temperature combustion chamber | |
| CN106873647A (en) | A kind of array variable element jet flow flow control method based on zero-net-mass-flux jet | |
| JP2002054504A (en) | Method and device for promoting mixture of fuel for scram-jet engine | |
| US10060389B2 (en) | Method and apparatus for variable exhaust nozzle exit area | |
| Lachowicz et al. | Flow field characterization of a jet and vortex actuator | |
| CN100478551C (en) | Inducing air | |
| CN108654706A (en) | A kind of drop preparation method and device based on oscillatory flow active control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |