Experimental device and method of assessing dielectric barrier discharge plasma flat plate turbulent drag reduction

A technology of dielectric barrier discharge and plasma, applied in the field of aerospace, to achieve the effect of simple operation

Pending Publication Date: 2018-01-16
ZHEJIANG UNIV
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Problems solved by technology

Based on this situation, more stringent regulatory measures are likely to appear in the next few years,

Method used

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  • Experimental device and method of assessing dielectric barrier discharge plasma flat plate turbulent drag reduction
  • Experimental device and method of assessing dielectric barrier discharge plasma flat plate turbulent drag reduction
  • Experimental device and method of assessing dielectric barrier discharge plasma flat plate turbulent drag reduction

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Experimental program
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Example Embodiment

[0027] Such as figure 1 As shown, the experiment was carried out in a low turbulence static sound wind tunnel. The experimental section is 1.2mX1.2m (WXH) and 3.5m (L) long. There are windows on both sides and top for optical instruments. The wind speed is set to 15m / s, along the negative x direction.

[0028] Such as figure 2 , 3 As shown, the construction of the zero pressure gradient plate 1 is composed of three 1mX0.8mX1cm acrylic horizontal plates 10, 2, and 3 relying on a fixed bracket 9 to splice together, and the tail plate 4 is a 1mX0.2m acrylic board relying on a fixed bracket and telescopic adjustment The rod is fixed, and the adjusting rod can be expanded and contracted as required to adjust the angle of the tail plate. The plate is provided with a side pressure hole 5, which is connected to the rubber tube of the pressure measuring valve. The pressure measuring valve is placed outside the wind tunnel and is connected to the plate by the rubber tube through the open...

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Abstract

The present invention discloses an experimental device and method of assessing dielectric barrier discharge plasma flat plate turbulent drag reduction. The device comprises a low turbulence silent wind tunnel, a test platform, a force measurement balance, a smoke generator, an LDV laser velocity measurement device, a dielectric barrier discharge plasma flat plate turbulence drag reduction device,and the test platform is fixedly arranged in an experimental segment of the low turbulence silent wind tunnel and comprises a fixing support, a zero-pressure gradient flat plate and a guide rail. Theprinciple of the method is that firstly the zero-pressure gradient flat plate is built in the wind tunnel to measure the flow field distribution when an excitation device is not arranged on the flat plate, and then the excitation device is added in the middle of the flat plate to measure the flow field distribution when the excitation device exists but is not turned on, and finally, the excitationdevice is turned on to measure the flow field distribution when the excitation device is added and is turned on. A Spalding formula is used to fit and calculate the friction resistance under different states, and the actual drag reduction effect of the dielectric barrier discharge plasma flat plate turbulence drag reduction device is analyzed. The method is simple to operate, and is suitable formeasuring the drag reduction effects of various drag reduction devices.

Description

technical field [0001] The invention belongs to the field of aerospace, and relates to an experimental device and method for evaluating the drag reduction of a dielectric barrier discharge plasma plate turbulent flow, so as to obtain the effect of a dielectric barrier discharge plasma actuator on the drag reduction of a flat plate turbulent boundary layer. Background technique [0002] The influence of the environment on the development of modern engineering technology is increasing. Climate change has become a major driver of technological development, and the aviation industry is no exception. Based on this situation, more stringent regulatory measures are likely to appear in the next few years, and designing environmentally friendly aircraft has become a major challenge for aircraft manufacturers. Reducing emissions, especially of greenhouse gases such as carbon dioxide and nitrogen oxides, is a new paradigm for current aircraft design. However, reducing final emissions...

Claims

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Application Information

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IPC IPC(8): G01M9/04
Inventor 郑耀邹建锋叶志贤楼韫闻童小康闾曾怡俞天纬陈烨斯张永兴
Owner ZHEJIANG UNIV
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