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Optical compensation method and device for wind tunnel experiment

A technology of optical compensation and wind tunnel experiment, which is applied in the direction of measurement device, aerodynamic test, machine/structural component test, etc. Problems such as particle concentration in the cave

Pending Publication Date: 2022-08-02
SUN YAT SEN UNIV
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Problems solved by technology

[0002] The vertically incident light is refracted twice on the upper and lower surfaces of the optical glass with uneven thickness, and then it is not emitted vertically, so the light intensity in the wind tunnel cannot reflect the particle concentration in the wind tunnel, and it is not convenient for us to observe the situation in the wind tunnel, so it cannot satisfy the flow requirements. Show experimental research requirements

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  • Optical compensation method and device for wind tunnel experiment
  • Optical compensation method and device for wind tunnel experiment
  • Optical compensation method and device for wind tunnel experiment

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Embodiment Construction

[0022] The technical scheme of the present invention is further described below in conjunction with the accompanying drawings of the description:

[0023] An optical compensation method for wind tunnel experiment, comprising the following steps:

[0024] Step 1. Add an optical compensator at the wind tunnel nozzle. The optical compensator and the wind tunnel nozzle are made of exactly the same material, so that the refractive index of the optical compensator and the wind tunnel nozzle are the same. The optical compensator is used for Correction of light deflection;

[0025] Step 2. All the light rays pass through the optical compensator and the nozzle successively. The tangent of the optical compensator at the incident point of all the rays and the tangent of the nozzle at the corresponding light exit point are completely parallel, and all the light rays can be connected at the incident point of the optical compensator. A smooth plane, from which we connect all points of inci...

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Abstract

The invention discloses an optical compensation method and device for a wind tunnel experiment, and the method comprises the following steps: 1, adding an optical compensator at a spraying pipe of a wind tunnel, and enabling the optical compensator and the spraying pipe of the wind tunnel to be made of completely same materials; 2, all the light rays pass through an optical compensator and a spray pipe in sequence; thirdly, all the light rays are still kept in the original irradiation direction after penetrating through the spray pipe. The device comprises a spray pipe and an optical compensator, light rays are vertically incident and vertically emergent through the optical compensator and the spray pipe, sheet light incident and scattering signals of flow display technologies such as NPLS and PIV are conveniently collected, and fine structure flow display experiment research of a Laval spray pipe flow field becomes possible.

Description

technical field [0001] The invention relates to an optical compensation method and device for wind tunnel experiments. Background technique [0002] The vertically incident light is not vertically emitted after being refracted twice by the upper and lower surfaces of the optical glass with uneven thickness. As a result, the light intensity in the wind tunnel cannot reflect the particle concentration in the wind tunnel, and it is not convenient for us to observe the situation in the wind tunnel, so the flow rate cannot be satisfied. Show requirements for experimental research. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an optical compensation method and device for wind tunnel experiments. [0004] In order to achieve the above object, the present invention is achieved through the following technical solutions: [0005] An optical compensation method for wind tunnel experiment, compris...

Claims

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Application Information

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IPC IPC(8): G01M9/00G01M9/02
CPCG01M9/00G01M9/02
Inventor 田立丰郭美琦姜婷黄开诱丁浩桂斌付双旭
Owner SUN YAT SEN UNIV
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