CN110455494A - A kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision and its method - Google Patents
A kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision and its method Download PDFInfo
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/18—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance
- G01P5/20—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance using particles entrained by a fluid stream
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Abstract
The present invention relates to a kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision and its methods, including variable-frequency motor, shaft coupling, first axle, the second axis, disk, square-outside and round-inside sink, CCD camera, sheet laser, laser, synchroscope, computer, copper pipe, impulse generator, valve, flowmeter, constant water tank, downpipe, water pump, reservoir；The constant water tank is set to reservoir top, and square-outside and round-inside sink is set to reservoir side；The square-outside and round-inside sink includes rectangular external flume, sink in circle, and sink is set in rectangular external flume in circle, sink both ends open in circle, and one end of sink is fixed with rectangular external flume in circle, and there are gaps with rectangular external flume for the other end；By means of the invention it is possible to accurately, comprehensively, systematically using the affecting laws of various flow characteristics in PIV research different Reynolds number, impact distance, wall surface revolving speed and pulse period stream field.
Description
Technical field
It is main the present invention relates to a kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision and its method
It is used for the instantaneous velocity measurement of constant pressure impulse jet impulse rotation wall surface Coupled Flow.
Background technique
Pulsing jet is non-solid jet, and this interruption jet stream is projected similar to bullet, and pulse water jet is rushed using waterpower
Hit --- the huge transient energy that water hammering generates, to reach the purpose of cutting or broken material.It can be with from its generation type
Pulsing jet is divided into three types: blocking type pulsing jet, Exciting-simulator system pulsing jet and pinch shock formula pulsing jet.This reality
Experiment device research object is blocking type pulsing jet.
Jet impulse rotation wall surface is widely used in the fields such as heating, cooling and chemistry, such as metal surface Re Chu
Reason, the cooling of aviation electronics and turbo blade and chemical vapor deposition etc..In addition to this, in life many machinery can approximation regard as
Jet impulse rotates wall surface, such as jet self-priming pump etc..Pulse factor is introduced on the basis of jet impulse rotates wall surface, is led
The complex flow between jet stream and wall surface and acutely is caused, vortex structure is changed significantly and has high diffusivity rate and volume suction rate, can be effective
Improve diabatic process.Therefore it comprehensively studies various in different Reynolds number, impact distance, wall surface revolving speed and pulse period stream field
The affecting laws of flow characteristics have important academic significance and engineering application value.
Currently, existing jet impulse rotation wall surface experimental provision is had the following characteristics that substantially using hot line hotting mask flow velocity
The single point measuring techniques such as (HWFA) and Laser Doppler Velocimeter (LDV) are counted, by calculating the movement velocity of particle, realize convection current
The noncontacting measurement of field.However, it is difficult to realize the instantaneous measurement of whole flow field.Can not systematically study different Reynolds number, impact away from
From and wall surface revolving speed to jet impulse rotation wall surface Coupled Flow influence.Only for bump jet stream, be not introduced into pulse because
Element.Paper " the Development of turbulent impinging jet on a rotating of Minagawa Y et al.
Paper " the Electrochemical mass transfer between an of disk " (2004) and N. ara et al.
The jet impulse that impinging jet and a rotating disk in a confined system " (2007) is used
Rotation wall surface experimental provision has the characteristics that 1,2,3；Paper " the Numerical analysis of of Lallave J C et al.
heat transfer on a rotating disk surface under confined liquid jet
Paper " the Particle image velocimetry measurement of impingement " (2006) and Liu Y H et al.
of jet impingement in a cylindrical chamber with a heated rotating disk”
(2013) the jet impulse rotation wall surface particle image velocimetry experimental provision used has the characteristics that 2,3.
Through retrieving, there is presently no about the special of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision
Benefit.
Summary of the invention
The invention patent is directed to above-mentioned existing technical deficiency, in order to study the wink of constant pressure impulse jet impulse rotation wall surface
State fluidal texture provides a kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision and its method, should
Invention can comprehensively study different Reynolds number, impact distance, various flow characteristics in wall surface revolving speed and pulse period stream field
Affecting laws.
The object of the present invention is achieved like this, a kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experiment
Device, characterized in that including variable-frequency motor, shaft coupling, first axle, the second axis, disk, square-outside and round-inside sink, CCD camera, piece
Light source, laser, synchroscope, computer, copper pipe, impulse generator, valve, flowmeter, constant water tank, downpipe, water pump, water storage
Pond；
The constant water tank is set to reservoir top, and square-outside and round-inside sink is set to reservoir side；The square-outside and round-inside water
Slot include rectangular external flume, circle in sink, circle in sink be set in rectangular external flume, circle in sink both ends open,
One end of sink is fixed with rectangular external flume in circle, the other end and rectangular external flume there are gap, and rectangular external flume inner wall,
There are gaps between sink outer walls in circle；The top of the square-outside and round-inside sink is equipped with relief port, and relief port is positioned at rectangular
In external flume inner wall, circle between sink outer walls, relief port is equipped with leak-off pipe, and leak-off pipe is placed in reservoir top；
The variable-frequency motor is located at the side of square-outside and round-inside sink, and first axle is connected on variable-frequency motor, and the second axis passes through foreign side
The rectangular external flume side of inner circle sink, and sink opening is placed in circle in sink in circle, first axle, the second axis are through joining
The connection of axis device, and the second axle position is equipped with disk in one end in circle in sink；
Constant chamber, water overflow chamber are equipped in the constant water tank, constant top of chamber is equipped with gap, and gap is equipped with overflow pipe,
Constant chamber is penetrated through by gap, overflow pipe and water overflow chamber；The water overflow chamber bottom is equipped with downpipe, and downpipe is located at reservoir
Top；
The bottom of the constant chamber is equipped with copper pipe, and one end of copper pipe and constant chamber penetrate through, the other end from square-outside and round-inside sink towards
The side of reservoir extends in the circle of square-outside and round-inside sink in sink, copper pipe be placed in one end in square-outside and round-inside sink towards
Disk in circle in sink；Flowmeter, valve, pulse generation are successively arranged from one end with the perforation of constant chamber on the copper pipe
Device；
The water inlet of the water pump is penetrated through by water inlet pipe and reservoir, and the water outlet of water pump is passed through by outlet pipe and constant chamber
It is logical；
The CCD camera is set to the just preceding or dead astern outside square-outside and round-inside sink；The sheet laser is located at square-outside and round-inside water
Slot top outer, and CCD camera is vertical with the vertical light curtain that sheet laser is projected to following square-outside and round-inside sink, sheet laser is through laser
Device is electrically connected with synchroscope, and CCD camera is electrically connected with synchroscope, synchroscope and calculating mechatronics.
The shape of the copper pipe is L shape, copper pipe horizontal length/copper pipe diameter >=50, it is ensured that fluid is before copper pipe injection
Sufficiently development.
It uses and is slidingly sealed between rectangular external flume in second axis and square-outside and round-inside sink.
A kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision progress experimental method, feature
It is:
The water with trace particle is filled it up in square-outside and round-inside sink and reservoir, starts variable-frequency motor, through first axle, shaft coupling
Device, the second axis are disc-rotated；Start water pump, the water in reservoir is delivered to constant water tank through water inlet pipe, water pump, outlet pipe
Constant chamber, when constant intracavitary dilutional hyponatremia, gap, overflow pipe of the excessive water through constant chamber top flow into water overflow chamber,
And the downpipe through water overflow chamber bottom falls into reservoir；
Constant intracavitary water is converted to different frequency by impulse generator through flowmeter, the valve on copper pipe and copper pipe
Pulsing jet is projected from copper pipe, impacts the disk wall surface in rotation, forms the stream of entire pulsing jet impact rotation wall surface
；The laser that laser generates is radiated at the middle section that entire constant pressure impulse jet impulse rotates wall surface by sheet laser, passes through
The CCD camera of side is shot；CCD camera, sheet laser, laser, synchroscope and computer form PIV camera system, real
It tests the speed in the flow field that rotation wall surface now is impacted to pulsing jet；
Disk is connected by the second axis, shaft coupling, first axle and variable-frequency motor, using cunning between the second axis and square-outside and round-inside sink
Dynamic sealing；
Gap of the water of sink in circle between sink, rectangular external flume, relief port, aerial drainage in circle in square-outside and round-inside sink
Pipe flows into reservoir, and the water of reservoir is conveyed the constant chamber into constant water tank by water pump again.
The Reynolds number of the valve control pulse jet streamR e 。
The variable-frequency motor, shaft coupling, first axle, the second axis, disk form rotating disc system, in the second axis and foreign side
Using being slidingly sealed between circle sink, entire rotating disc system can be moved left and right relative to square-outside and round-inside sink, adjust copper pipe
Export to the impact distance between disk wall surfaceH；That is, move variable-frequency motor outward inner circle sink close to or far from can push or pull on
First axle, shaft coupling, the second axis, so that disk is exported to copper pipe close to or far from adjustment copper pipe exports between disk wall surface
Impact distanceH。
The pulse period of the impulse generator control pulsing jetT。
Structure of the invention is reasonable, through the invention, a kind of constant pressure impulse jet impulse rotation wall surface particle picture provided
Test the speed experimental provision and its method, and the device is mainly by variable-frequency motor, shaft joint, axis (first axle, the second axis), disk, foreign side
Inner circle sink (including rectangular external flume, circle in sink), CCD camera, sheet laser, laser, synchroscope, computer, copper pipe,
Impulse generator, valve, flowmeter, constant water tank, downpipe, water pump, reservoir composition.Jet stream is projected from circular copper pipe, impact
On the disk wall surface of rotation, entire flow field is formed.
Constant water tank is used to provide power for pulsing jet, liquid level is constant in water tank, i.e., pressure is constant, eliminates dynamic
Power is originated from body pressure fluctuation bring impulse disturbances.
Square-outside and round-inside sink is manufactured using tempered glass, the impluvium on round reservoir housing, impluvium
It is full of water between round reservoir, can effectively reduce laser direct irradiation and generate refraction bring on round reservoir
Error.
It uses and is slidingly sealed between axis and square-outside and round-inside sink, rotating disc system (variable-frequency motor, shaft coupling, axis and circle
Disk) it can move left and right, the distance (impact distance of change copper pipe jet exit to disk wall surfaceH).
Through the invention, a kind of impulse generator is devised, the group that a signal generator adds solenoid valve is substantially
It closes, solenoid valve is controlled by signal generator unlatches and closes the time, to form the pulsing jet of different frequency.
Beneficial outcomes of the invention are: it is not only easy to operate, but also can accurately, comprehensively, systematically be ground using PIV
Study carefully different Reynolds number, impact distance, in wall surface revolving speed and pulse period stream field various flow characteristics affecting laws.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is that constant pressure impulse jet impulse rotates wall surface experimental provision top view.
Fig. 3 is the Chinese and foreign inner circle sink left view direction structural schematic diagram of Fig. 1 (the Chinese and foreign inner circle sink D-D direction structure of Fig. 2
Schematic diagram).
In figure, 1 variable-frequency motor, 2 shaft couplings, 3-1 first axle, the second axis of 3-2,4 disks, 5 square-outside and round-inside sinks, the side 5-1
Shape external flume, 5-2 circle in sink, 5-3 leak-off pipe, 6 CCD cameras, 7 sheet lasers, 8 lasers, 9 synchroscopes, 10 computers,
11 copper pipes, 12 impulse generators, 13 valves, 14 flowmeters, 15 constant water tanks, the constant chamber of 15-1,15-2 water overflow chamber, 15-3 spilling water
Pipe, 16 downpipes, 17 water pumps, 18 reservoirs, 19-1 water inlet pipe, 19-2 outlet pipe.
Specific embodiment
Below in conjunction with Figure of description, the present invention will be described in detail.
A kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision, including variable-frequency motor 1, shaft coupling
2, first axle 3-1, the second axis 3-2, disk 4, square-outside and round-inside sink 5, CCD camera 6, sheet laser 7, laser 8, synchroscope 9, meter
Calculation machine 10, copper pipe 11, impulse generator 12, valve 13, flowmeter 14, constant water tank 15, downpipe 16, water pump 17, reservoir 18.
Constant water tank 15 is set to 18 top of reservoir, square-outside and round-inside sink 5 is set to 18 side of reservoir；In foreign side
Circle sink 5 includes sink 5-2 in rectangular external flume 5-1, circle, and sink 5-2 is set in rectangular external flume 5-1 in circle, circle
Sink 5-2 both ends open in shape, one end of sink 5-2 is fixed with rectangular external flume 5-1 in circle, the other end and rectangular external flume
There are gaps by 5-1, and there are gaps between sink 5-2 outer wall in rectangular external flume 5-1 inner wall, circle；In square-outside and round-inside sink 5
Top relief port is set, and relief port be located at rectangular external flume 5-1 inner wall, it is round between sink 5-2 outer wall, in relief port
Leak-off pipe 5-3 is set, and leak-off pipe 5-3 is placed in 18 top of reservoir.
Variable-frequency motor 1 is located at the side of square-outside and round-inside sink 5, and first axle 3-1 is connected on variable-frequency motor 1, the second axis 3-2
Across the side rectangular external flume 5-1 of square-outside and round-inside sink 5, and in circle, sink 5-2 opening is placed in sink 5-2 in circle
Interior, first axle 3-1, the second axis 3-2 are connected through shaft coupling 2, and the second axis 3-2 is located at one end setting in circle in sink 5-2
Disk 4.
Constant chamber 15-1, water overflow chamber 15-2 are set in constant water tank 15, and gap, spilling water is arranged in the constant top chamber 15-1
Overflow pipe 15-3 is set on mouth, and constant chamber 15-1 is penetrated through by gap, overflow pipe 15-3 and water overflow chamber 15-2；In water overflow chamber
Downpipe 16 is arranged in the bottom 15-2, and downpipe 16 is located at 18 top of reservoir.
Copper pipe 11 is set in the bottom of constant chamber 15-1, one end of copper pipe 11 and constant chamber 15-1 are penetrated through, and the other end is from outer
Square inner circle sink 5 extends in the circle of square-outside and round-inside sink 5 in sink 5-2 towards the side of reservoir 18, and copper pipe 11 is placed in
One end in square-outside and round-inside sink 5 is towards the disk 4 in circle in sink 5-2；It is penetrated through certainly with constant chamber 15-1 on copper pipe 11
One end is successively arranged flowmeter 14, valve 13, impulse generator 12.
The water inlet of water pump 17 is penetrated through by water inlet pipe 19-1 and reservoir 18, and the water outlet of water pump 17 passes through outlet pipe
19-2 and constant chamber 15-1 is penetrated through.CCD camera 6 is set to the just preceding or dead astern outside square-outside and round-inside sink 5；Sheet laser 7
In 5 top outer of square-outside and round-inside sink, and the vertical light curtain that CCD camera 6 and sheet laser 7 are projected to following square-outside and round-inside sink 5
Vertically, sheet laser 7 is electrically connected through laser 8 with synchroscope 9, and CCD camera 6 is electrically connected with synchroscope 9, synchroscope 9 and computer
10 electrical connections.
Further, the shape of copper pipe 11 be L shape, 11 horizontal lengths of copper pipe/copper pipe, 11 diameter >=50, it is ensured that fluid from
Sufficiently development before copper pipe 11 projects.It is close using sliding between rectangular external flume 5-1 in second axis 3-2 and square-outside and round-inside sink 5
Envelope.
In use, filling it up with the water with trace particle in square-outside and round-inside sink 5 and reservoir 18, start variable-frequency motor 1,
Disk 4 is driven to rotate through first axle 3-1, shaft coupling 2, the second axis 3-2；Start water pump 17, the water in reservoir 18 is through water inlet pipe
19-1, water pump 17, outlet pipe 19-2 are delivered to the constant chamber 15-1 of constant water tank 15, when the dilutional hyponatremia in constant chamber 15-1,
Gap, overflow pipe 15-3 of the excessive water through the top constant chamber 15-1 flow into water overflow chamber 15-2, and through the bottom water overflow chamber 15-2
Downpipe 16 fall into reservoir 18.
Water in constant chamber 15-1 passes through impulse generator through flowmeter 14, the valve 13 on copper pipe 11 and copper pipe 11
12 are converted to the pulsing jet of different frequency, project from copper pipe 11, impact 4 wall surface of disk in rotation, form entire pulse
The flow field of jet impulse rotation wall surface；The laser that laser 8 generates is radiated at entire constant pressure impulse jet impulse by sheet laser 7
The middle section for rotating wall surface, is shot by the CCD camera 6 of side；CCD camera 6, sheet laser 7, laser 8, synchroscope 9
PIV camera system is formed with computer 10, realizes that the flow field for impacting rotation wall surface to pulsing jet is tested the speed.
Disk 4 is connect by the second axis 3-2, shaft coupling 2, first axle 3-1 with variable-frequency motor 1, in the second axis 3-2 and foreign side
It uses and is slidingly sealed between circle sink 5；
Gap of the water of sink 5-2 in circle between sink 5-2, rectangular external flume 5-1 in circle in square-outside and round-inside sink 5,
Relief port, leak-off pipe 5-3 flow into reservoir 18, and the water of reservoir 18 is conveyed the constant chamber into constant water tank 15 again by water pump 17
15-1。
Further, valve 13 controls the Reynolds number of pulsing jetR e .Variable-frequency motor 1, shaft coupling 2, first axle 3-1, second
Axis 3-2, disk 4 form rotating disc system, using being slidingly sealed between the second axis 3-2 and square-outside and round-inside sink 5, entirely rotate
Disc systems can be moved left and right relative to square-outside and round-inside sink, and adjustment copper pipe 11 exports to the impact distance between disk wall surfaceH；
That is, move variable-frequency motor 1 outward inner circle sink 5 close to or far from first axle 3-1, shaft coupling 2, the second axis 3- can be pushed or pulled on
2, so that disk 4 is exported to copper pipe 11 close to or far from adjustment copper pipe 11 exports to the impact distance between disk wall surfaceH.It is described
Variable-frequency motor 1 controls disc rotation speedn.The pulse period of the control pulsing jet of impulse generator 12T。
In addition, when using:
A, each experiment equipment is installed to designated position by above-mentioned mounting means.
B, the water with trace particle, operating pump are filled it up in square-outside and round-inside sink and reservoir.
C, after whole system is stable, equipment each in experimental provision adjusting is reached into required measurement condition.
D, PIV equipment is opened, the position and CCD camera visual angle of laser are adjusted, operation computer is shot.
Variable parameter of the invention:
1. Reynolds number: the switch degree of control valve adjusts jet stream Reynolds number；
2. wall surface revolving speed: adjusting the voltage and frequency of out-put supply by frequency converter, change motor speed；
3. impact distance: the position of left and right adjustment rotating disc system changes the impact distance of circular copper pipe outlet and disk；
4. the pulse period: unlatching and closing the time by signal generator control solenoid valve, form the pulsing jet of different frequency.
Above embodiment is the description of the invention, is not limitation of the invention, it is possible to understand that is not departing from this hair
A variety of change, modification, replacement and modification, guarantor of the invention can be carried out to these embodiments in the case where bright principle and spirit
Shield range is defined by the appended claims and the equivalents thereof.
Claims (9)
1. a kind of constant pressure impulse jet impulse rotates wall surface particle image velocimetry experimental provision, characterized in that including variable-frequency motor
(1), shaft coupling (2), first axle (3-1), the second axis (3-2), disk (4), square-outside and round-inside sink (5), CCD camera (6), piece light
Source (7), laser (8), synchroscope (9), computer (10), copper pipe (11), impulse generator (12), valve (13), flowmeter
(14), constant water tank (15), downpipe (16), water pump (17), reservoir (18)；
The constant water tank (15) is set to reservoir (18) top, and square-outside and round-inside sink (5) is set to reservoir (18) side；
The square-outside and round-inside sink (5) include rectangular external flume (5-1), circle in sink (5-2), circle in sink (5-2) be set to
Rectangular external flume (5-1) is interior, sink (5-2) both ends open in circle, one end of sink (5-2) and rectangular external flume in circle
(5-1) is fixed, and the other end and rectangular external flume (5-1) are there are gap, and sink (5- in rectangular external flume (5-1) inner wall, circle
2) there are gaps between outer wall；The top of the square-outside and round-inside sink (5) is equipped with relief port, and relief port is located at rectangular external flume
In (5-1) inner wall, circle between sink (5-2) outer wall, relief port is equipped with leak-off pipe (5-3), and leak-off pipe (5-3) is placed in water storage
Pond (18) top；
The variable-frequency motor (1) is located at the side of square-outside and round-inside sink (5), and first axle (3-1) is connected on variable-frequency motor (1),
Second axis (3-2) passes through the side rectangular external flume (5-1) of square-outside and round-inside sink (5), and sink (5-2) opening is set in circle
In sink in circle (5-2), first axle (3-1), the second axis (3-2) are connected through shaft coupling (2), and the second axis (3-2) is located at
One end in circle in sink (5-2) is equipped with disk (4)；
It is equipped with constant chamber (15-1), water overflow chamber (15-2) in the constant water tank (15), is equipped with spilling water at the top of constant chamber (15-1)
Mouthful, gap is equipped with overflow pipe (15-3), and constant chamber (15-1) passes through gap, overflow pipe (15-3) and water overflow chamber (15-2)
Perforation；The water overflow chamber bottom (15-2) is equipped with downpipe (16), and downpipe (16) is located at reservoir (18) top；
The bottom of the constant chamber (15-1) is equipped with copper pipe (11), and one end of copper pipe (11) and constant chamber (15-1) are penetrated through, another
End extends to sink (5-2) in the circle of square-outside and round-inside sink (5) from square-outside and round-inside sink (5) towards the side of reservoir (18)
Interior, copper pipe (11) is placed in one end in square-outside and round-inside sink (5) towards the disk (4) in sink in circle (5-2)；The copper pipe
(11) flowmeter (14), valve (13), impulse generator (12) are successively arranged from one end with constant chamber (15-1) perforation on；
The water inlet of the water pump (17) is penetrated through by water inlet pipe (19-1) and reservoir (18), and the water outlet of water pump (17) passes through
Outlet pipe (19-2) and constant chamber (15-1) are penetrated through；
The CCD camera (6) is set to square-outside and round-inside sink (5) outside, and sheet laser (7) is located at the top of square-outside and round-inside sink (5)
Outside, and CCD camera (6) is vertical with the vertical light curtain that sheet laser (7) is projected to following square-outside and round-inside sink (5), sheet laser (7)
It is electrically connected through laser (8) with synchroscope (9), CCD camera (6) is electrically connected with synchroscope (9), synchroscope (9) and computer
(10) it is electrically connected.
2. a kind of constant pressure impulse jet impulse according to claim 1 rotates wall surface particle image velocimetry experimental provision,
Be characterized in, the shape of the copper pipe (11) is L shape, copper pipe (11) horizontal length/copper pipe (11) diameter >=50, it is ensured that fluid from
Sufficiently development before copper pipe (11) projects.
3. a kind of constant pressure impulse jet impulse according to claim 1 rotates wall surface particle image velocimetry experimental provision,
It is characterized in, uses and be slidingly sealed between rectangular external flume (5-1) in second axis (3-2) and square-outside and round-inside sink (5).
4. a kind of constant pressure impulse jet impulse according to claim 1 rotates wall surface particle image velocimetry experimental provision,
It is characterized in, the CCD camera (6) is set to the external just preceding or dead astern of square-outside and round-inside sink (5).
5. a kind of constant pressure impulse jet impulse rotation wall surface particle figure described in -4 any one claims according to claim 1
As testing the speed, experimental provision carries out experimental method, it is characterized in that:
The water with trace particle is filled it up with square-outside and round-inside sink (5) and reservoir (18) are inner, is started variable-frequency motor (1), through the
One axis (3-1), shaft coupling (2), the second axis (3-2) drive disk (4) rotation；Start water pump (17), the water in reservoir (18)
The constant chamber (15-1) of constant water tank (15) is delivered to through water inlet pipe (19-1), water pump (17), outlet pipe (19-2), when constant chamber
When dilutional hyponatremia in (15-1), gap, overflow pipe (15-3) of the excessive water through the top constant chamber (15-1) flow into water overflow chamber
(15-2), and the downpipe (16) through the bottom water overflow chamber (15-2) falls into reservoir (18)；
Water in constant chamber (15-1) passes through pulse through flowmeter (14), the valve (13) on copper pipe (11) and copper pipe (11)
Generator (12) is converted to the pulsing jet of different frequency, projects from copper pipe (11), impacts disk (4) wall surface in rotation,
Form the flow field of entire pulsing jet impact rotation wall surface；The laser that laser (8) generates is radiated at entirely by sheet laser (7)
Constant pressure impulse jet impulse rotates the middle section of wall surface, is shot by the CCD camera (6) of side；CCD camera (6), piece light
Source (7), laser (8), synchroscope (9) and computer (10) form PIV camera system, realize and impact rotation wall to pulsing jet
It tests the speed in the flow field in face；
Disk (4) is connect by the second axis (3-2), shaft coupling (2), first axle (3-1) with variable-frequency motor (1), the second axis (3-2)
It uses and is slidingly sealed between square-outside and round-inside sink (5)；
In square-outside and round-inside sink (5) in circle the water of sink (5-2) in circle between sink (5-2), rectangular external flume (5-1)
Gap, relief port, leak-off pipe (5-3) flow into reservoir (18), water pump (17) again conveys the water of reservoir (18) into constant
The constant chamber (15-1) of water tank (15).
6. according to the method described in claim 5, it is characterized in that: the Reynolds number of the valve (13) control pulsing jetR e 。
7. according to the method described in claim 5, it is characterized in that: the variable-frequency motor (1), shaft coupling (2), first axle (3-1),
Second axis (3-2), disk (4) form rotating disc system, using sliding between the second axis (3-2) and square-outside and round-inside sink (5)
Sealing, entire rotating disc system can be moved left and right relative to square-outside and round-inside sink, and adjustment copper pipe (11) exports to disk wall surface
Between impact distanceH；That is, move variable-frequency motor (1) outward inner circle sink (5) close to or far from first axle (3- can be pushed or pulled on
1), shaft coupling (2), the second axis (3-2), so that disk (4) is exported to copper pipe (11) close to or far from adjustment copper pipe (11) outlet
Impact distance between disk wall surfaceH。
8. according to the method described in claim 5, it is characterized in that: the variable-frequency motor (1) controls disc rotation speedn。
9. according to the method described in claim 5, it is characterized in that: the pulse week of the impulse generator (12) control pulsing jet
PhaseT。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895567.2A CN110455494A (en) | 2019-09-21 | 2019-09-21 | A kind of constant pressure impulse jet impulse rotation wall surface particle image velocimetry experimental provision and its method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083329A (en) * | 2019-12-26 | 2020-04-28 | 哈尔滨工程大学 | Automatic positioning and loading platform for underwater camera |
| CN111964868A (en) * | 2020-07-10 | 2020-11-20 | 江苏大学 | Multi-station multi-level jet flow morphology detection device |
| CN114486170A (en) * | 2022-01-23 | 2022-05-13 | 昕净洁(江苏)能源科技有限公司 | Jet entrainment phenomenon experimental method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111083329A (en) * | 2019-12-26 | 2020-04-28 | 哈尔滨工程大学 | Automatic positioning and loading platform for underwater camera |
| CN111964868A (en) * | 2020-07-10 | 2020-11-20 | 江苏大学 | Multi-station multi-level jet flow morphology detection device |
| CN114486170A (en) * | 2022-01-23 | 2022-05-13 | 昕净洁(江苏)能源科技有限公司 | Jet entrainment phenomenon experimental method |
| CN114486170B (en) * | 2022-01-23 | 2024-02-09 | 昕净洁(江苏)能源科技有限公司 | Jet entrainment phenomenon experimental method |
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