CN203163959U - Simulation device for wind resistance of speed regulation air laminar flow test model - Google Patents
Simulation device for wind resistance of speed regulation air laminar flow test model Download PDFInfo
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- CN203163959U CN203163959U CN 201320142305 CN201320142305U CN203163959U CN 203163959 U CN203163959 U CN 203163959U CN 201320142305 CN201320142305 CN 201320142305 CN 201320142305 U CN201320142305 U CN 201320142305U CN 203163959 U CN203163959 U CN 203163959U
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Abstract
The utility model discloses a simulation device for wind resistance of a speed regulation air laminar flow test model. The simulation device comprises a front cylinder, a middle cylinder, a rear cylinder and an air speed regulating device which are sequentially connected, wherein the front cylinder is internally provided with an air inlet flow guide grid, and the rear cylinder is internally provided with an air outlet flow guide grid; the middle cylinder is internally provided with dual guide rails used for placing the model; a dynamometer is installed outside the axial end wall of the front cylinder, and the dynamometer penetrates through the front cylinder through a connecting shaft with a hook and is arranged in the middle cylinder. Disordered air in the outside world forms a stable laminar flow after passing through the air inlet flow guide grid, and the stable laminar flow reaches the middle cylinder, the air flow in the middle cylinder forms multiple constant-speed air flows after passing through the air outlet flow guide grid, and the multiple constant-speed air flows are extracted by an air outlet fan; a windward end of the model is subjected to the wind resistance and moves toward the air outlet flow guide grid, the model pulls the dynamometer through the connecting shaft, the dynamometer displays a reading, and data of the wind resistance of the model is obtained. The simulation device disclosed by the utility model is simple in structure, and overcomes the problem that a wind tunnel test is high in cost and difficult to popularize.
Description
Technical field
The utility model relates to lamina air flow flow simulating measuring technique, relates in particular to a kind of analogue means of speed governing lamina air flow flowing test model windage.
Background technology
Laminar flow is a kind of flow state of fluid, and when fluid was mobile in pipe, its particle was made level and smooth rectilinear motion along the direction parallel with tubular axis, and flow rate of fluid is in tube hub place maximum, its nearly wall place minimum.In laminar flow, the track of fluid micellar does not have tangible irregular fluctuation, the momentum-exchange that the adjacent fluid interlayer has only molecular thermalmotion to cause.The laminar flow generally frictional resistance than turbulent flow is little, thereby in aircraft or Ship Design, should make boundary-layer flow keep laminar condition as far as possible.But laminar flow is a kind of perfect condition, and at how to produce this problem of laminar flow in special experimental enviroment, many scholars have proposed to produce separately the method for laminar flow to this.Main method for generation of laminar flow is wind-tunnel method at present.The wind tunnel test device mainly is made up of several sections such as stable section, contraction section, test section and diffusers.But it is very big that construction wind tunnel test facility expends cost, and in test process, need testing tools such as three-dimensional hot-wire anemometer, aerodynamic balance, sensor and data acquisition system (DAS), because problems such as cost are high and the test period is long, wind-tunnel method is subjected to very big restriction aspect the popularizing of generation laminar flow.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, and a kind of analogue means of speed governing lamina air flow flowing test model windage is provided, and overcome wind tunnel test and expended the cost height, and the problem that is difficult to popularize.
The utility model is achieved through the following technical solutions:
A kind of analogue means of speed governing lamina air flow flowing test model windage comprises the placket that connects successively, middle tube, back tube and wind-speed adjusting device, is provided with air inlet water conservancy diversion air grid in the described placket, is provided with air outlet water conservancy diversion air grid in the tube of back; Radial sidewalls at placket offers air intake machine interface, is provided with out fan interface at back axial end wall; Be provided with two guide rails of placing model in middle tube, outside the placket axial end wall dynamometer be installed, dynamometer passes placket by a coupling shaft with hook, and places in the tube axis of described coupling shaft and the dead in line of placket.
Be placed with wind gage between tube and the back tube in described; Described wind-speed adjusting device connects the air intake machine respectively and goes out blower fan.
Tube is a transparent glass tube in described, at glass tube dodge gate is installed.
Tube is connected with the back tube with placket with nut by screw rod in described.
Described air inlet water conservancy diversion air grid and the straight tube Shu Zucheng of air outlet water conservancy diversion air grid by a plurality of identical circles.
A kind of method of test model windage comprises the steps:
(1) open in the dodge gate of tube, model is lain in a horizontal plane on two guide rails, the windward side of model is hung on the hook of coupling shaft;
(2) start speed governing lamina air flow flow simulating device, extraneous chaotic air, by air intake machine interface by behind the air inlet water conservancy diversion air grid, form tube in stable laminar-flow air stream and the arrival, air-flow in the middle tube flows by forming multiply air at the uniform velocity behind the air outlet water conservancy diversion air grid, again by going out the fan interface sucking-off; Meanwhile, the windward side of model is subjected to the resistance of wind and yearns for air outlet water conservancy diversion air grid direction along two lead rail axis and move, and model spurs dynamometer by coupling shaft, by the registration that dynamometer shows, obtains the data of the suffered windage of model;
(3) finish the test of model after, close the power supply of speed governing lamina air flow flow simulating device, open dodge gate, take out the model of having finished test.
In the described step (2), place coloured smog at air intake machine interface, these smog are along with air is inhaled into air inlet water conservancy diversion air grid together, enter then in the middle tube, discharge from going out fan interface at last, by observing and analyze the fluidised form of these smog in middle tube, observe simulation laminar flow flow state.
The utility model has following advantage and effect with respect to prior art:
The utility model can directly substitute wind tunnel test in test process, on the one hand, avoided carrying out wind tunnel test and the spent great number cost of need construction wind-tunnel facility; On the other hand, avoided the testing apparatus of required complexity in test process.
The utility model is simple in structure, convenient test is quick, has adopted two guide rails and inlet and outlet water conservancy diversion air grid, and the method for testing error is less, and market potential is big, and its application will be conducive to popularizing of lamina air flow flow simulating technology.
Description of drawings
Fig. 1 is the structural representation of the analogue means of the utility model speed governing lamina air flow flowing test model windage.
Embodiment
Below in conjunction with specific embodiment the utility model is done further concrete detailed description the in detail.
Embodiment
As shown in Figure 1, the analogue means of the utility model speed governing lamina air flow flowing test model windage, comprise the placket 1 that connects successively, middle tube, back tube 6 and wind-speed adjusting device (not shown), be provided with air inlet water conservancy diversion air grid 2 in the described placket 1, be provided with air outlet water conservancy diversion air grid 7 in the back tube 6; Radial sidewalls at placket 1 offers air intake machine interface 13, is provided with out fan interface 15 at back 6 axial end wall; Be provided with two guide rails 9 of placing model in middle tube 4, outside placket 1 axial end wall dynamometer 14 be installed, dynamometer 14 passes placket 1 by a coupling shaft 11 with hook, and places in the tube 3 dead in line of the axis of described coupling shaft 11 and placket 1.
Be placed with wind gage 8 between tube 4 and the back tube 6 in described; Described wind-speed adjusting device connects air intake machine (not shown) respectively and goes out the blower fan (not shown).
Two guide rails 9 adopt two sections diameters the same, and the identical guide rod of length.In the stressed process of model, model on two guide rails 9 along lead rail axis to movement.
For the ease of tube 4 inner laminar flow flow states in observing, tube 4 adopts transparent glass tube in this.At glass tube dodge gate 5 is installed, dodge gate 5 opens and closes, and is convenient to take out and place model.
Tube 4 is connected with back tube 6 with placket 1 with nut by screw rod 10 in described, is convenient to dismounting.
Described air inlet water conservancy diversion air grid 2 and the straight tube Shu Zucheng of air outlet water conservancy diversion air grid 7 by a plurality of identical circles.They play a part shunting and water conservancy diversion, have guaranteed to form continual and steady laminar flow in the middle tube 4.Make the windage measurement of model more accurate.
A kind of method of test model windage comprises the steps:
(1) open in tube 4 dodge gate 5, model is lain in a horizontal plane on two guide rails 9, the windward side of model is hung on the hook of coupling shaft 11;
(2) start speed governing lamina air flow flow simulating device, extraneous chaotic air, by air intake machine interface 13 by behind the air inlet water conservancy diversion air grid 2, form tube 4 in stable laminar-flow air stream and the arrival, air-flows in the middle tube 4 are by air outlet water conservancy diversion air grid 7 back formation multiplies air stream at the uniform velocity, again by going out fan interface 15 sucking-offs; Meanwhile, the windward side of model is subjected to the resistance of wind and axially moves toward air outlet water conservancy diversion air grid 7 directions along two guide rails 9, and model by the registration that dynamometer shows, obtains the data of the suffered windage of model by coupling shaft 11 pulling dynamometers 14;
(3) finish the test of model after, close the power supply of speed governing lamina air flow flow simulating device, open dodge gate 5, take out the model of having finished test.
In the above-mentioned steps (2), coloured smog is placed at 13 places at air intake machine interface, these smog are along with air is inhaled into air inlet water conservancy diversion air grid 2 together, enter then in the middle tube 4, discharge from going out fan interface 15 at last, by observing and analyze the fluidised form of these smog in middle tube 4, observe simulation laminar flow flow state.
In the reality test, in order to obtain the simulation laminar flow under the different wind speed, the frequency of frequency converter that can be by regulating wind-speed adjusting device realizes speed governing, the size of wind speed (range is 0-45m/s) will be presented on the display screen of wind gage 8, thereby simulates the lamina air flow flowing environment under the different wind speed.In order to reduce test error as far as possible, at a kind of model, but follow-on test average for 3 times, and with its size as the suffered windage of this model.
As mentioned above, just can realize the utility model preferably.
Embodiment of the present utility model is not restricted to the described embodiments; other are any not to deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitute, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (5)
1. the analogue means of a speed governing lamina air flow flowing test model windage comprises the placket that connects successively, middle tube, back tube and wind-speed adjusting device, it is characterized in that: be provided with air inlet water conservancy diversion air grid in the described placket, be provided with air outlet water conservancy diversion air grid in the tube of back; Radial sidewalls at placket offers air intake machine interface, is provided with out fan interface at back axial end wall; Be provided with two guide rails of placing model in middle tube, outside the placket axial end wall dynamometer be installed, dynamometer passes placket by a coupling shaft with hook, and places in the tube axis of described coupling shaft and the dead in line of placket.
2. the analogue means of speed governing lamina air flow flowing test model windage according to claim 1 is characterized in that: be placed with wind gage between tube and the back tube in described; Described wind-speed adjusting device connects the air intake machine respectively and goes out blower fan.
3. the analogue means of speed governing lamina air flow flowing test model windage according to claim 1 is characterized in that: tube is a transparent glass tube in described, at glass tube dodge gate is installed.
4. the analogue means of speed governing lamina air flow flowing test model windage according to claim 1 is characterized in that: tube is by screw rod and nut and placket with afterwards tin be connected in described.
5. the analogue means of speed governing lamina air flow flowing test model windage according to claim 1 is characterized in that: described air inlet water conservancy diversion air grid and the straight tube Shu Zucheng of air outlet water conservancy diversion air grid by a plurality of identical circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320142305 CN203163959U (en) | 2013-03-26 | 2013-03-26 | Simulation device for wind resistance of speed regulation air laminar flow test model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320142305 CN203163959U (en) | 2013-03-26 | 2013-03-26 | Simulation device for wind resistance of speed regulation air laminar flow test model |
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| Publication Number | Publication Date |
|---|---|
| CN203163959U true CN203163959U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320142305 Withdrawn - After Issue CN203163959U (en) | 2013-03-26 | 2013-03-26 | Simulation device for wind resistance of speed regulation air laminar flow test model |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175671A (en) * | 2013-03-26 | 2013-06-26 | 华南理工大学 | Simulation device and method for wind resistance of speed-regulating laminar wind flow flowing test model |
| CN103926048A (en) * | 2014-04-30 | 2014-07-16 | 中北大学 | Simulation test bed for effect of lateral disturbance on flying projectile |
| CN105569715A (en) * | 2015-12-17 | 2016-05-11 | 煤炭科学技术研究院有限公司 | Regulation and monitoring system for air volume of air windows on coal mine |
| CN107014586A (en) * | 2017-04-26 | 2017-08-04 | 哈尔滨工程大学 | Intelligence is with ship seaworthiness instrument |
-
2013
- 2013-03-26 CN CN 201320142305 patent/CN203163959U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175671A (en) * | 2013-03-26 | 2013-06-26 | 华南理工大学 | Simulation device and method for wind resistance of speed-regulating laminar wind flow flowing test model |
| CN103926048A (en) * | 2014-04-30 | 2014-07-16 | 中北大学 | Simulation test bed for effect of lateral disturbance on flying projectile |
| CN103926048B (en) * | 2014-04-30 | 2016-02-24 | 中北大学 | Side direction perturbation is to Flight Projectile effect simulates testing table |
| CN105569715A (en) * | 2015-12-17 | 2016-05-11 | 煤炭科学技术研究院有限公司 | Regulation and monitoring system for air volume of air windows on coal mine |
| CN107014586A (en) * | 2017-04-26 | 2017-08-04 | 哈尔滨工程大学 | Intelligence is with ship seaworthiness instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130828 Effective date of abandoning: 20160504 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |