Gas Flow Field Measurement System Based on AC Discharge Plasma Sensor

A plasma and measurement system technology, applied in the field of measurement, can solve the problems of complex circuit, complex structure and high cost, and achieve the effects of high spatial resolution, accurate measurement results and low cost

Active Publication Date: 2016-08-24
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the laser Doppler velocimeter needs components such as lasers, photomultiplier tubes, transmission receivers, fiber optic couplers, etc., so its structure is complex and the cost is high; the hot wire anemometer needs complex circuits, so its cost is also high

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  • Gas Flow Field Measurement System Based on AC Discharge Plasma Sensor
  • Gas Flow Field Measurement System Based on AC Discharge Plasma Sensor
  • Gas Flow Field Measurement System Based on AC Discharge Plasma Sensor

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Embodiment Construction

[0027] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to specific embodiments and drawings. The implementations not shown or described in the drawings are those known to those of ordinary skill in the art. Although this article may provide an example of a parameter containing a specific value, it should be understood that the parameter does not need to be exactly equal to the corresponding value, but can be approximated to the corresponding value within acceptable error tolerances or design constraints. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only directions with reference to the drawings. Therefore, the directional terms used are used to illustrate but not to limit the present invention.

[0028] The invention utilizes the principle that the ...

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Abstract

The invention provides a gas flow field measurement system based on an AC discharge plasma sensor. The gas flow field measurement system includes: a substrate, attached to the surface of the object to be measured; several plasma sensing units, respectively used to measure the flow conditions in the area where each plasma sensing unit includes: a plasma sensor , including a high-voltage electrode and a ground electrode oppositely arranged on the surface of the substrate; an AC power supply, one end of which is connected to the high-voltage electrode and the other end is connected to the ground electrode, for providing an operating voltage for the plasma sensor; and determining The device is connected with the plurality of plasma sensing units, and is used for judging the gas flow condition at the position where the plasma sensor is located by using the voltage signal output by the plasma sensor. Compared with the existing gas flow field measurement system, the gas flow field measurement system of the present invention has simple structure, low cost and high precision.

Description

Technical field [0001] The invention relates to the field of measurement technology and energy and power technology, and in particular to a gas flow field measurement system based on an AC discharge plasma sensor. Background technique [0002] The basic requirement for improving the aerodynamic performance of an aircraft is to reduce the flight resistance and increase the lift in order to reduce the fuel consumption of the aircraft. In addition, an important means to improve the thrust-to-weight ratio of aeroengines is to reduce the number of stages of fans, compressors, and turbines to reduce weight. This requires optimizing the blade shape and increasing their single-stage load and output power. The drag, lift, and aerodynamic performance of aircraft engine blades are all inseparable from the flow of gas. [0003] The flow state of the gas will be described below. Firstly, the concepts of laminar flow zone, transition zone and turbulent flow zone are explained by taking gas flo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/06
Inventor 李钢李芳林峰朱俊强聂超群徐燕骥
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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