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Device and method for measuring fluorescent oil flow friction force field

A measuring device and friction force technology, which is applied in the field of relative friction force field measuring device on the surface of wind tunnel test model, can solve the problems that model development cannot provide effective support, cannot provide frictional resistance, cumbersome and complicated calibration process, etc., so as to reduce the impact , Reduce measurement costs, reduce links and costs

Active Publication Date: 2016-05-18
AVIC SHENYANG AERODYNAMICS RES INST
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Problems solved by technology

At present, the technology used to measure model surface friction is basically based on single-point measurement technology, which cannot provide global friction resistance; in addition, such as oil film interferometry technology, liquid crystal friction measurement technology, etc., although local Continuous friction force field, but due to its cumbersome and complicated calibration process, it cannot be promoted in wind tunnel tests, and cannot provide effective support for model development

Method used

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  • Device and method for measuring fluorescent oil flow friction force field
  • Device and method for measuring fluorescent oil flow friction force field

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Embodiment Construction

[0022] A fluorescent oil flow friction field measurement device, including a CCD camera 4, an LED light source 5, a computer 6, a wind tunnel 7 for testing and spraying equipment;

[0023] The spraying equipment is composed of a spray gun 1 and a high-pressure gas source 2, and the high-pressure gas source is a nitrogen source;

[0024] The CCD camera 4 and the LED light source 5 are installed outside the observation window of the wind tunnel 7 for the test respectively, and the LED light source and the model test piece 3 which is arranged in the wind tunnel 7 for the test can be irradiated, and the CCD camera 4 can effectively capture The image information of the model test piece 3; the LED light source 5 is connected to the peripheral power supply through wires, the information output terminal of the CCD camera 4 is connected to the corresponding interface of the computer 6 through the cat6 network cable, and the medium inlet of the spray gun 1 is connected to the high-pressu...

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Abstract

A fluorescent oil flow friction field measurement device, including a CCD camera, LED light source, computer, wind tunnel for testing and spraying equipment; the spraying equipment is composed of a spray gun and a high-pressure air source, the high-pressure air source is a nitrogen source; the CCD camera and The LED light sources are respectively installed outside the observation window of the wind tunnel for the test, and the LED light source can be irradiated on the model test piece set in the wind tunnel for the test, and the CCD camera can effectively capture the image information of the model test piece; the LED light source passes through The wire is connected to the peripheral power supply, the information output end of the CCD camera is connected to the corresponding interface of the computer through a cat6 network cable, and the medium inlet of the spray gun is connected to the medium outlet of the high-pressure air source through a pipeline. The invention can make the paint on the surface of the model evenly distributed, can reach a stable state as soon as possible under the action of the flow field, reduces the link and cost of model processing, greatly reduces the measurement cost, and reduces the influence of measuring equipment on the flow field on the surface of the model.

Description

technical field [0001] The invention belongs to a device for measuring the surface relative friction force field of a wind tunnel test model. Background technique [0002] Aircraft drag has always been one of the difficulties and hotspots in aerodynamics research. It is composed of surface frictional resistance, induced drag, pressure difference drag and interference drag. Surface frictional drag is one of the important drag sources. [0003] Frictional resistance is one of the most important and difficult fluid flow parameters to measure. At present, the technology used to measure model surface friction is basically based on single-point measurement technology, which cannot provide global friction resistance; in addition, such as oil film interferometry technology, liquid crystal friction measurement technology, etc., although local Continuous friction force field, but due to its cumbersome and complicated calibration process, it cannot be promoted in wind tunnel tests, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/06
Inventor 王鹏尚金奎衷洪杰刘国政张军强张雪张威
Owner AVIC SHENYANG AERODYNAMICS RES INST
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