CN103969023A - Movable boundary generating device - Google Patents
Movable boundary generating device Download PDFInfo
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- CN103969023A CN103969023A CN201410120331.9A CN201410120331A CN103969023A CN 103969023 A CN103969023 A CN 103969023A CN 201410120331 A CN201410120331 A CN 201410120331A CN 103969023 A CN103969023 A CN 103969023A
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- control module
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- outside interlayer
- moving boundary
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Abstract
The invention relates to a movable boundary generating device which comprises an air source, a boundary deformation frequency control module, a boundary deformation time control module, a boundary deformation degree control module, a negative-pressure generator and mounting devices for researched objects in different shapes. The movable boundary generating device has the advantages that movable detour flow boundaries in different shapes can be generated by the movable boundary generating device, boundary layers can be changed by the aid of the air source and the various control modules, static detour flow in different shapes can be implemented if parameters are not modified in experiment procedures, and deformation of the boundaries can be controlled if the frequency control module, the time control module and the deformation degree control module are utilized; the detour flow in the different shapes can be implemented by the aid of the different mounting devices, and accordingly detour flow with the movable boundaries can be generated.
Description
Technical field
The present invention relates to a kind of generation device of moving boundary, can make fluid after the object (moving boundaries) of different shape, can study it and stream rear mobile phenomenon, behind interior (outward) border by this device, produce different venturi effects, thereby form different Flow Fields.
Background technology
It is classical fluid mechanics problem that the cylinder of various different shapes and combination thereof, rectangular column etc. stream motion.In real life, there is for example bridge pier of various by-pass means, aircraft wing, sea life etc., the large-sized object such as the support column of marine oil acquisition platform and aircraft carrier all be unable to do without the category that streams motion even.At these, stream in object, what relatively more have researching value is streaming of changing of those borders, as aquatic animals such as fish with gather around the evolution that winged flight animal via has been crossed For hundreds of millions of years, the evolution of the Nature by various cruelty is selected, and has brought up and in the water showing unique characteristics, has moved about and the special ability of sky flight.Bionical research always is study hotspot both domestic and external, and the bionical equipment of development bionic Aircraft, mechanical bird and mechanical fish etc. is subject to the great attention of the military always, has Military Application background.
Fish move about and the flight of birds only by body wave or just brandishing of wing can be realized, thereby its principle is to utilize, stream the power that the dynamic deformation on border and the generation interaction of the flow field of periphery obtain urging its operation.Along with current aviation, the further developing of navigation and military cause, the interaction of the dynamic deformation on border and the generation of the flow field of periphery is just being streamed in fluid force educational circles at extensive concern both at home and abroad.Can be at present both at home and abroad to the research of fish, birds maneuverability still in Phenomena Observation and qualitative description stage, lack quantitative experiment measuring, numerical evaluation and mechanical mechanism analysis.
Summary of the invention
Object of the present invention provides a kind of experimental provision that streams of Moving Boundary, solves the control that prior art cannot make border change and cannot realize border deformation.
In order to achieve the above object, technical scheme of the present invention has been to provide a kind of generation device of moving boundary, for difformity object is carried out to the experiment of streaming of Moving Boundary, comprise the erecting equipment that difformity object is installed, it is characterized in that: at erecting equipment overcoat, have outside interlayer, two ends and the airtight laminating of erecting equipment two ends outer wall of outside interlayer, also comprise:
Source of the gas, one side makes negative pressure maker obtain power; Outwards export on the other hand gas, at least process voltage regulating module and frequency/time control module, by by erecting equipment input outside interlayer, produce outside interlayer and are out of shape this gas successively;
Negative pressure maker, produces negative-pressure gas, thereby extracts the gas in the interlayer of outside via frequency/time control module and erecting equipment;
Voltage regulating module, for adjusting effluent air pressure, to control the amplitude of deformation of outside interlayer;
Frequency/time control module, the negative-pressure gas that barotropic gas voltage regulating module being produced according to setpoint frequency and negative pressure maker produce and erecting equipment be switched conductive back and forth, and according to setting-up time, control time of each conducting, thereby control the distortion frequency of outside interlayer and the time speed in deformation process.
Preferably, also comprise amplitude control module, for accurately controlling effluent air flow, with described voltage regulating module acting in conjunction, make the control of described outside interlayer amplitude of deformation more accurate.
Preferably, described amplitude control module adopts high-precision reduction valve.
Preferably, described high-precision reduction valve is valuator.
Preferably, described negative pressure maker mainly consists of La Foer pipe.
Preferably, described voltage regulating module comprises the pressure regulator valve that is connected with pressure nominal device.
Preferably, described frequency/time control module comprises two solenoid valves, all solenoid valves are all connected with frequency generator, the output terminal of two solenoid valves is all connected to described erecting equipment, the input end of two solenoid valves is connected with described voltage regulating module and described negative pressure maker respectively, by frequency generator, control two solenoid valves according to setpoint frequency conducting or cut-off, thereby control the contraction state of outside interlayer, and can control according to the frequency size of setting the deformation time length of outside interlayer.
The present invention can produce the difform border of movably streaming, by source of the gas and various control module, boundary layer is changed, the static state that any parameter change can realize various shapes if do not do in experimentation is streamed, if the control module of frequency of utilization control module, time control module and distortion size can realize the Deformation control to border, and can realize difform streaming by different erecting equipments, thereby produce moving boundary, stream.This experimental facilities is simple in operation, have good repeatability, the research of moving boundary circumferential motion problem is not only had to good stickiness, but also can require to do corresponding device according to the difference of specific experiment, process, thereby reach the effect of drawing inferences about other cases from one instance.
Accompanying drawing explanation
Fig. 1 is the system chart of the generation device of a kind of moving boundary provided by the invention;
Fig. 2 is the erecting equipment schematic diagram in the present invention;
Fig. 3 A is that the A-A of Fig. 2 is to cut-open view;
Fig. 3 B is that the B-B of Fig. 2 is to cut-open view.
Embodiment
For the present invention is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
The generation device of the moving boundary that as shown in Figure 1, the present invention proposes comprises the amplitude control module of source of the gas, voltage regulating module, border deformation, the frequency/time control module of border deformation, negative pressure maker and erecting equipment 3 that studied difformity object is installed.
Source of the gas can utilize air compressor, its role in moving boundary experimental provision is: guarantee the formation of moving boundary, and aerodynamic force is provided to the parts such as voltage regulating module, amplitude control module and negative pressure maker, guaranteeing the gas source of whole device, is the guarantee of the constant operation of generation device of moving boundary.
Voltage regulating module is mainly comprised of pressure regulator valve and pressure nominal device 2, and wherein pressure regulator valve can be described as reduction valve substantially, and its principle of work is as follows: high-pressure medium is charged in a relatively large chamber and is realized decompression by an aperture, is actually by the decompression of damming.Its role in moving boundary experimental provision is: regulate and control the gaseous tension in the generation device of whole moving boundary, control the distortion size of flow and outside interlayer together with amplitude control module, safeguards system is moved under normal pressure.
Amplitude control module can be used the pneumatic control equipments such as valuator, thereby accurately changes the distortion size of moving boundary.Valuator is a kind of high-precision reduction valve, is mainly used in the adjustment of pressure definite value, and it carries out work by force balance principle.Amplitude control module plays the effect of accurate control flow after voltage regulating module, thereby accurately controls the distortion size of outside interlayer 1.
Frequency/time control module is used for convection cell air inlet and gives vent to anger and control, and mainly frequency generator and two solenoid valves, consists of.The input end that the output terminal of two solenoid valves is all connected to 3, two solenoid valves of erecting equipment is connected with voltage regulating module and negative pressure maker respectively.Utilize frequency generator can control easily the open and close frequency of solenoid valve, thereby the distortion frequency that realizes external boundary layer 1 is controlled.Solenoid valve is for adjusting direction, flow, speed and other the parameter of fluid, and the interactions such as proportion of utilization valve, can carry out the time speed control in moving boundary deformation process.By choosing suitable solenoid valve, reach the object that external boundary layer 1 deformation time length and speed are controlled.
In negative pressure maker, mainly by La Foer pipe, formed.Fluid, at local contraction place, increases flow velocity, produces negative pressure.Utilize this feature to be configured as negative pressure maker.The effect of negative pressure maker in device is that the contraction for outside interlayer 1 provides safeguard.
In the erecting equipment 3 of studied difformity object is installed, difformity object comprises cylinder, rectangular column, streamlined post and airfoil post etc.Boundary means under different operating modes, can make moving boundary apply to the situation of streaming of various aspects.As shown in Fig. 2, Fig. 3 A and Fig. 3 B, in the present embodiment, the elongate cylindrical pipe that erecting equipment 3 is metal material, at column tube middle part with blow vent, gas can be led to outside interlayer by erecting equipment 3, outside interlayer 1 is rubber sleeve, is enclosed within column tube outside, and by the two ends of rubber sleeve and the airtight laminating of column tube outer wall, thereby guarantee that outside interlayer 1 is reasonably out of shape.Outside the two ends of column tube, blow vent is connected with frequency/time control module corresponding interface, gas enters in column tube by frequency/time control module, and the outside interlayer of controlling between two column tubes according to the size of gas flow and speed of incoming flow is expanded and contraction at regular time and quantity.
More than, for streaming the effect of moving boundary device various piece, this device is coordinated various piece together, and its course of work is:
The first step, adjustment voltage regulating module, amplitude control module, frequency/time control module are to initial position;
The cylindrical device of second step, the required type of installation experiment also installs outside interlayer 1 additional;
The 3rd step, open source of the gas, make gas successively by voltage regulating module, amplitude control module, frequency/time control module, finally arrive outside interlayer 1, guarantee that air-flow is unimpeded; Make on the other hand negative pressure maker obtain power;
The 4th step, experimental condition, regulate voltage regulating module to control single unit system air pressure;
The 5th step, amplitude of accommodation control module make outside interlayer distortion size reach requirement for experiment condition;
Direction, flow and the speed etc. that the 6th step, regulating frequency/time control module is controlled gas make outside interlayer be expanded to the maximum time to meet requirement for experiment condition, and shrink as required or continues and expand;
If the 7th step does not make outside interlayer produce a desired effect to the control of frequency/time control module, debug each experimental provision, repeat the process of the 4th step to the six steps;
If the 8th step has reached requirement of experiment to the control of frequency/time control module, according to next operating mode, repeat the process of second step to the six steps.
Claims (7)
1. the generation device of a moving boundary, for difformity object is carried out to the experiment of streaming of Moving Boundary, comprise the erecting equipment (3) that difformity object is installed, it is characterized in that: at erecting equipment (3) overcoat, have outside interlayer (1), two ends and the airtight laminating of erecting equipment (3) two ends outer wall of outside interlayer (1), also comprise:
Source of the gas, one side makes negative pressure maker obtain power; Outwards export on the other hand gas, this gas at least passes through voltage regulating module and frequency/time control module successively by by erecting equipment (3) input outside interlayer (1), makes outside interlayer (1) produce distortion;
Negative pressure maker, produces negative-pressure gas, thereby extracts the gas in outside interlayer (1) via frequency/time control module and erecting equipment (3);
Voltage regulating module, for adjusting effluent air pressure, to control the amplitude of deformation of outside interlayer (1);
Frequency/time control module, the negative-pressure gas that barotropic gas voltage regulating module being produced according to setpoint frequency and negative pressure maker produce and erecting equipment (3) be switched conductive back and forth, and according to setting-up time, control time of each conducting, thereby control distortion frequency and the deformation time length of outside interlayer (1).
2. the generation device amplitude control module of a kind of moving boundary as claimed in claim 1, it is characterized in that: also comprise amplitude control module, for accurately controlling effluent air flow, with described voltage regulating module acting in conjunction, make the control of described outside interlayer (1) amplitude of deformation more accurate.
3. the generation device amplitude control module of a kind of moving boundary as claimed in claim 2, is characterized in that: described amplitude control module adopts high-precision reduction valve.
4. the generation device amplitude control module of a kind of moving boundary as claimed in claim 3, is characterized in that: described high-precision reduction valve is valuator.
5. the generation device amplitude control module of a kind of moving boundary as claimed in claim 1, is characterized in that: described negative pressure maker mainly consists of La Foer pipe.
6. the generation device amplitude control module of a kind of moving boundary as claimed in claim 1, is characterized in that: described voltage regulating module comprises the pressure regulator valve that is connected with pressure nominal device (2).
7. the generation device amplitude control module of a kind of moving boundary as claimed in claim 1, it is characterized in that: described frequency/time control module comprises two solenoid valves, all solenoid valves are all connected with frequency generator, the output terminal of two solenoid valves is all connected to described erecting equipment (3), the input end of two solenoid valves is connected with described voltage regulating module and described negative pressure maker respectively, by frequency generator, control two solenoid valves according to setpoint frequency conducting or cut-off, thereby control the contraction state of outside interlayer (1), and can control according to the frequency size of setting the deformation time length of outside interlayer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120331.9A CN103969023B (en) | 2014-03-27 | 2014-03-27 | A kind of generator of moving boundary |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410120331.9A CN103969023B (en) | 2014-03-27 | 2014-03-27 | A kind of generator of moving boundary |
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| CN103969023A true CN103969023A (en) | 2014-08-06 |
| CN103969023B CN103969023B (en) | 2016-12-07 |
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| CN201410120331.9A Active CN103969023B (en) | 2014-03-27 | 2014-03-27 | A kind of generator of moving boundary |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509996A (en) * | 2015-12-29 | 2016-04-20 | 西南石油大学 | Device and method for measuring resistance coefficient and lift coefficient of flow around marine riser |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136396A (en) * | 1994-11-04 | 1996-05-31 | Yaskawa Electric Corp | Device and method for measuring air flow |
| DE102008002448A1 (en) * | 2008-06-16 | 2009-12-24 | Airbus Deutschland Gmbh | Method and system for determining a force acting on a body |
| CN102628731A (en) * | 2012-04-13 | 2012-08-08 | 欧进萍 | Steady air suction/blowing control device of structural wall surface ambient flow field |
| CN202501975U (en) * | 2012-03-27 | 2012-10-24 | 中国矿业大学 | Flow field display experimental apparatus |
| CN103149011A (en) * | 2013-03-06 | 2013-06-12 | 中国船舶重工集团公司第七○二研究所 | Test device and method for forming high-speed stable flow field |
-
2014
- 2014-03-27 CN CN201410120331.9A patent/CN103969023B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136396A (en) * | 1994-11-04 | 1996-05-31 | Yaskawa Electric Corp | Device and method for measuring air flow |
| DE102008002448A1 (en) * | 2008-06-16 | 2009-12-24 | Airbus Deutschland Gmbh | Method and system for determining a force acting on a body |
| CN202501975U (en) * | 2012-03-27 | 2012-10-24 | 中国矿业大学 | Flow field display experimental apparatus |
| CN102628731A (en) * | 2012-04-13 | 2012-08-08 | 欧进萍 | Steady air suction/blowing control device of structural wall surface ambient flow field |
| CN103149011A (en) * | 2013-03-06 | 2013-06-12 | 中国船舶重工集团公司第七○二研究所 | Test device and method for forming high-speed stable flow field |
Non-Patent Citations (1)
| Title |
|---|
| 刘君等: "类客车体绕流场的数值模拟", 《长沙交通学院学报》, no. 02, 30 June 2000 (2000-06-30) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509996A (en) * | 2015-12-29 | 2016-04-20 | 西南石油大学 | Device and method for measuring resistance coefficient and lift coefficient of flow around marine riser |
| CN105509996B (en) * | 2015-12-29 | 2017-12-26 | 西南石油大学 | A kind of marine riser streams the measure device and method of resistance coefficient and lift coefficient |
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| CN103969023B (en) | 2016-12-07 |
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