A plasma pneumatic probe and its measurement system
A plasma and probe technology, which is applied in the field of plasma pneumatic probe and its measurement system, can solve problems affecting calibration and control, affecting discharge stability, and failing to meet the requirements of incoming flow direction testing, achieving high sensitivity, The effect of simple structure
Active Publication Date: 2021-04-27
XIAMEN UNIV
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Problems solved by technology
[0005] The currently developed plasma anemometer based on AC glow discharge mainly adopts a double-electrode structure, which cannot meet the test requirements for the incoming flow direction, and the electrode loss caused by the discharge process can easily affect the stability of the discharge, thereby affecting calibration and control.
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[0028] To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.
[0029] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.
[0030] Such as Figure 1-4 As shown, a plasma pneumatic probe includes an insulating barrier medium 2, a cylindrical insulator 3, a first electrode 1 and a second electrode 4 as an anode, and a third electrode 6 as a c...
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Abstract
The invention relates to the technical field of flow field detection, in particular to a plasma pneumatic probe and a measurement system thereof. The invention discloses a plasma pneumatic probe and its measurement system, wherein the plasma pneumatic probe includes an insulating barrier medium, a cylindrical insulating member, a first electrode and a second electrode as an anode, and a third electrode as a cathode electrode, the third electrode is a cylindrical structure, embedded in the first end of the insulating member, the first electrode is a sheet structure, exposed on the first end face of the insulating member, and the insulating barrier medium is located at the first end of the insulating member. Between the first electrode and the first end surface of the third electrode, the area of the first end surface of the third electrode is larger than the area of the first electrode, the number of the second electrodes is multiple, and the circumferential direction is equally spaced in the insulation On the outer peripheral surface of the insulating member, in the radial direction of the insulating member, at least a part of the second electrode and the third electrode do not overlap.
Description
technical field [0001] The invention belongs to the technical field of flow field detection, and in particular relates to a plasma pneumatic probe and a measurement system thereof. Background technique [0002] The test of the three-dimensional flow field is of great significance to the machinery that uses fluid motion to achieve energy conversion. According to the measured surface velocity of complex machinery and the distribution of velocity vectors, corresponding structural improvements or flight control can effectively improve aerodynamic efficiency and mechanical operation. stability. Such as: measuring the swirl flow at the entrance of the inlet to evaluate the influence of flow field distortion on the stability of the engine; testing the angular separation and root leakage flow near the blade tip to analyze the total pressure loss in the compressor stator channel; obtaining the aircraft angle of attack and The sideslip angle data is used to correct the flight attitud...
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IPC IPC(8): H05H1/24H05H1/00
CPCH05H1/0081H05H1/2406
Inventor 周排弟孙道恒林育兹崔在甫李鑫周颖锋李雅莉何功汉陈沁楠
Owner XIAMEN UNIV