CN108811289A - A kind of dynamic pressure type plasma synthesis fluidic generator - Google Patents
A kind of dynamic pressure type plasma synthesis fluidic generator Download PDFInfo
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- CN108811289A CN108811289A CN201810600514.9A CN201810600514A CN108811289A CN 108811289 A CN108811289 A CN 108811289A CN 201810600514 A CN201810600514 A CN 201810600514A CN 108811289 A CN108811289 A CN 108811289A
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- generator
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
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Abstract
A kind of dynamic pressure type plasma synthesis fluidic generator, is related to a kind of jet flow generating apparatus.The device utilizes front incoming dynamic pressure, high speed incoming is introduced into plasma generator intracavitary by bleed pipeline and check valve, cavity pressure is improved, while high-temperature plasma is generated by electrion in intracavitary, make intracavity gas expanded by heating and generates high-speed jet at jet exit.The present apparatus is equipped with plasma generator, bleed pipeline, check valve and high-voltage pulse power source, and wherein plasma generator is made of negative electrode, positive electrode and generator cavity, and generator cavity, which is equipped with, comes inflow entrance, jet exit and electrode-inserting holes.The present apparatus has many advantages, such as that simple in structure, light weight and cost is low and is had little effect to flight vehicle aerodynamic shape while generating high-speed jet.In addition to this, the present apparatus can also carry out a certain range of control by changing the electrical parameter of load to effluxvelocity.
Description
Technical field
It is a kind of to utilize incoming dynamic pressure and high temperature etc. the present invention relates to a kind of dynamic pressure type plasma synthesis fluidic generator
Gas ions generate the generator of high speed synthesizing jet-flow.
Technical background
Synthesizing jet-flow can be applied to active Flow Control, by small scale and part energy injection, to flow into
Row control.Compared with traditional control technology, with synthesizing jet-flow active control technology can to complicated dynamic process into
The accurate phase controlling of row.Synthesizing jet-flow excitor is small, simple in structure, light-weight, not complicated mechanical structure, can be with
It is arranged in the various positions of various aircraft according to demand, to reach Optimal Control effect.
The jet energy that existing synthesizing jet-flow generator generates all depends entirely on power, it is desirable to obtain higher
Jet energy just needs powerful power supply, this will so that complete equipment become it is very huge with it is complicated.
In addition to synthesizing jet-flow, the mode for generating jet stream on board the aircraft at present is also calmed the anger from leading edge bleed, from engine
The advantages of modes such as bleed formation jet stream after several grades of machine, these methods, is that jet energy is larger, and structure is more simple, no
The equipment such as power supply are needed, but need the mechanical device of certain complexity, such as pipeline, pump, while the power of meeting consumption of engine,
Reduce efficiency.
The application for a patent for invention of Publication No. CN106741922 discloses a kind of rotor noise suppressing method, its principle
It is that the air-flow of front edges of rotary wings is guided into blade tip end face by way of in blade tip leading edge trepanning, generates high-speed jet to weaken blade tip
Vortices breakdown.The side effect of this method that jet stream is obtained by incoming dynamic pressure is that rotor efficiency is made to decline to a great extent.
The application for a patent for invention of Publication No. CN103501572A disclose a kind of jetting type Plasma Actuator and its
Control method, its principle are that one group of aperture is opened up on closed quartz ampoule as jet exit, and cavity both ends are inserted into respectively
Electrode simultaneously keeps a determining deviation, and electrode connects the two poles of the earth of nanosecond power supply, and after turn-on current, arc discharge is generated between two electrodes,
Air heats expand in quartz ampoule, and jet stream is generated by jet exit.The effluxvelocity that the fluidic generator of this form generates compared with
It is low.
The application for a patent for invention of Publication No. CN104320900A discloses a kind of gas compensating type plasma fluid generator,
Its principle is that one tonifying Qi check valve communicated with cavity of installation, tonifying Qi check valve can be on plasma fluid generator
Accelerate the speed that intracavitary air pressure restores when discharging gap, and then improves the speed of plasma synthesis jet stream.This form is penetrated
The effluxvelocity that flow-generator generates equally is difficult to greatly improve.
The application for a patent for invention of Publication No. CN102014567B discloses a kind of dynamic pressure type synthesizing jet-flow excitor, it
Principle is the setting dynamic pressure import on the cavity wall surface for be parallel to flow direction, is added using kinetic energy possessed by external high speed incoming
The medium backfill of driver, improves the amount of jet and working frequency and response speed of driver under fast low density gas.This synthesis
Jet-flow excitor can be only applied under hypersonic low density gas, and jet energy is limited to power.
The application for a patent for invention of Publication No. CN104202898A discloses a kind of based on hypersonic speed flow energy utilization
Zero energy consumption zero mass synthesizing jet-flow device, its principle is to accelerate synthesizing jet-flow excitor using the dynamic pressure of hypersonic incoming
Medium backfill, while using driver shell Aerodynamic Heating generate thermal energy, by thermo-electric conversion module be driver power supply.
This synthesizing jet-flow device equally can be only applied to it is hypersonic under the conditions of, and jet energy is limited to thermo-electric conversion module work(
Rate.
Invention content
The purpose of the present invention is to provide a kind of dynamic pressure type plasma synthesis fluidic generator, which can be
It does not influence to provide high-speed jet under the premise of flight vehicle aerodynamic shape.
Dynamic pressure type plasma synthesis fluidic generator of the present invention be equipped with plasma generator, bleed pipeline,
Check valve and high-voltage pulse power source, wherein plasma generator are made of generator cavity, negative electrode and positive electrode, generator
Cavity, which is equipped with, comes inflow entrance, jet exit and two electrode-inserting holes.Front incoming is entered by small air inlet hole at stationary point and is drawn
After feed channel, enter generator cavity through check valve, improves cavity pressure, while electrode discharge generates high-temperature plasma, gas
The heated instantaneous expansion of body is simultaneously sprayed from jet exit, forms high-speed jet.
Compared to presently, there are other generate jet streams apparatus and method, onboard high-speed proposed by the invention synthesis penetrate
Stream device has the following advantages：
1. can be worked normally in larger speed of incoming flow and air pressure range, and the more big then cavity pressure of speed of incoming flow more
Greatly, the effluxvelocity of generation is also faster.
2. high-speed jet can be generated under conditions of power is smaller, while avoiding efficiency caused by a large amount of bleeds
Loss.
3. the present apparatus can load electrical parameter by change and carry out a certain range of control to effluxvelocity.
Description of the drawings
Fig. 1 is dynamic pressure type plasma synthesis fluidic generator structure chart
Outlet jet velocity contrast schemes under Fig. 2 different pressures
Specific implementation mode：
Fig. 1 show the structure chart of dynamic pressure type plasma synthesis fluidic generator of the present invention, including air entraining pipe
Road 1, check valve 2, generator cavity 3 and carry out inflow entrance 7 at discharge electrode 4, pulsed high voltage generator 5, jet exit 6.
1 interior smooth of bleed pipeline, one end are connect with the aperture (not shown) being arranged on leading edge stationary point, the other end
It is connected to the entrance of check valve 2, for incoming V1 to be introduced check valve.
2 entrance of the check valve is connected with bleed pipeline, and connection plasma generator in outlet carrys out inflow entrance 7, uses
In generator cavity will be introduced from the gas in air entraining pipe road, cavity pressure is improved, while preventing back flow of gas from entering air entraining pipe
Road.
The generator cavity 3 is the airtight cavity made of high-temperature insulation material, and incoming is provided on cavity wall surface
Entrance 7, jet exit 6 and electrode-inserting holes (not shown, electrode 4 has been inserted into), air-flow origin inflow entrance enters generator chamber
Body 3 simultaneously makes cavity pressure increase, and the high-temperature plasma that intracavity gas is generated through electric discharge heats, and is sprayed by jet exit after expansion
And go out, form high-speed jet V2.Discharge electrode 4 is inserted into generator cavity 3 by electrode-inserting holes, is used between electrode and cavity
High temperature resistant silica gel is fixed and ensures air-tightness.
The discharge electrode 4 is made of tungsten-copper alloy, and electrode is divided into anode and cathode, respectively with high-voltage pulse power source 5
Output end is connected, electrode spacing need to according to be designed using power parameter.
Checking test method for the dynamic pressure type plasma synthesis fluidic generator work effect of above structure is：It adopts
The method of inlet pressure is improved by elongated tubular at one-way valve inlet to simulate the dynamic pressure of incoming stationary point, is entered respectively in check valve
Apply the pressure of 0kPa, 3kPa, 7kPa, 11kPa and 15kPa at mouthful；The load of power supply plasma synthesizing jet-flow generator swashs
It is 22kV, exciting signal frequency 150hz, duty ratio 15% to encourage voltage；One-way valve inlet diameter 3mm, jet exit diameter
1mm.Jet stream average speed is measured using U-tube.
Test result is as shown in Figure 2.The abscissa of Fig. 2 is the inlet pressure P (units loaded to one-way valve inlet：KPa),
Ordinate is effluxvelocity V (units：m/s).It can be seen that from the curve in Fig. 2 in on-load voltage and the constant item of pumping signal
Under part, effluxvelocity can be significantly improved by improving one-way valve inlet pressure (i.e. incoming dynamic pressure increases).This shows that speed of incoming flow is got over
Gao Shi, the effluxvelocity that the dynamic pressure type plasma synthesis jet-flow excitor of the present application generates are higher.
Claims (5)
1. a kind of dynamic pressure type plasma synthesis fluidic generator, it is characterised in that be equipped with plasma generator, bleed pipeline,
Check valve and high-voltage pulse power source；Plasma generator is made of generator cavity, negative electrode and positive electrode；Generator cavity
Wall, which is equipped with, comes inflow entrance, jet exit and two electrode-inserting holes.
2. a kind of dynamic pressure type plasma synthesis fluidic generator as described in claim 1, which is characterized in that the air entraining pipe
The inlet aperture in road is preferably arranged at the stationary point of incoming, and towards incoming, pore shape is unlimited, and speed of incoming flow is unlimited.
3. a kind of dynamic pressure type plasma synthesis fluidic generator as described in claim 1, it is characterised in that negative electrode and sun
Electrode respectively by electrode-inserting holes be inserted into cavity, certain spacing is kept between negative electrode and positive electrode, respectively with set on chamber
The cathode and anode of high-voltage pulse power source outside body are electrically connected.
4. a kind of dynamic pressure type plasma synthesis fluidic generator as described in claim 1, it is characterised in that generator cavity
Material be insulating materials, first choice be high temperature ceramic material.
5. a kind of dynamic pressure type plasma synthesis fluidic generator as described in claim 1, it is characterised in that the air entraining pipe
Joint portion between road, check valve, cavity and electrode is fixed and is sealed using fluid sealant or high temperature resistant silica gel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810600514.9A CN108811289A (en) | 2018-06-12 | 2018-06-12 | A kind of dynamic pressure type plasma synthesis fluidic generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810600514.9A CN108811289A (en) | 2018-06-12 | 2018-06-12 | A kind of dynamic pressure type plasma synthesis fluidic generator |
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| CN108811289A true CN108811289A (en) | 2018-11-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111511089A (en) * | 2020-06-17 | 2020-08-07 | 沈阳航空航天大学 | Method for realizing equipment stealth by using plasma jet |
| CN112896503A (en) * | 2021-03-18 | 2021-06-04 | 厦门大学 | Helicopter rotor blade capable of restraining tip vortex of blade |
| CN113279978A (en) * | 2021-03-23 | 2021-08-20 | 厦门大学 | Gas compressor and method for weakening sound excitation of rotor blade of gas compressor |
| CN113993266A (en) * | 2021-10-19 | 2022-01-28 | 中国人民解放军空军工程大学 | Self-air-supply type double-cavity plasma synthetic jet actuator |
| CN115320833A (en) * | 2022-10-12 | 2022-11-11 | 南京航空航天大学 | Air supplement type plasma jet exciter based on Tesla valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620080A (en) * | 1984-06-27 | 1986-10-28 | Nippon Steel Corporation | Plasma jet generating apparatus with plasma confining vortex generator |
| CN102014567A (en) * | 2010-10-11 | 2011-04-13 | 中国人民解放军国防科学技术大学 | Dynamical pressure type high-energy synthetic jet actuator |
| CN204014247U (en) * | 2014-09-02 | 2014-12-10 | 厦门大学 | A kind of acceleration jet flow generating apparatus |
| CN104320900A (en) * | 2014-11-13 | 2015-01-28 | 厦门大学 | Air supplementing type plasma jet flow generator |
| CN106507575A (en) * | 2016-10-10 | 2017-03-15 | 南京航空航天大学 | A kind of plasma synthesis jet-flow excitor for high-altitude vehicle |
-
2018
- 2018-06-12 CN CN201810600514.9A patent/CN108811289A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620080A (en) * | 1984-06-27 | 1986-10-28 | Nippon Steel Corporation | Plasma jet generating apparatus with plasma confining vortex generator |
| CN102014567A (en) * | 2010-10-11 | 2011-04-13 | 中国人民解放军国防科学技术大学 | Dynamical pressure type high-energy synthetic jet actuator |
| CN204014247U (en) * | 2014-09-02 | 2014-12-10 | 厦门大学 | A kind of acceleration jet flow generating apparatus |
| CN104320900A (en) * | 2014-11-13 | 2015-01-28 | 厦门大学 | Air supplementing type plasma jet flow generator |
| CN106507575A (en) * | 2016-10-10 | 2017-03-15 | 南京航空航天大学 | A kind of plasma synthesis jet-flow excitor for high-altitude vehicle |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111511089A (en) * | 2020-06-17 | 2020-08-07 | 沈阳航空航天大学 | Method for realizing equipment stealth by using plasma jet |
| CN112896503A (en) * | 2021-03-18 | 2021-06-04 | 厦门大学 | Helicopter rotor blade capable of restraining tip vortex of blade |
| CN113279978A (en) * | 2021-03-23 | 2021-08-20 | 厦门大学 | Gas compressor and method for weakening sound excitation of rotor blade of gas compressor |
| CN113279978B (en) * | 2021-03-23 | 2024-01-26 | 厦门大学 | Compressor and method for weakening acoustic excitation of compressor rotor blade |
| CN113993266A (en) * | 2021-10-19 | 2022-01-28 | 中国人民解放军空军工程大学 | Self-air-supply type double-cavity plasma synthetic jet actuator |
| CN115320833A (en) * | 2022-10-12 | 2022-11-11 | 南京航空航天大学 | Air supplement type plasma jet exciter based on Tesla valve |
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