A measuring device and measuring method for cross-flow characteristics of hole wall
A measuring device and hole wall technology, applied in the field of wind tunnel experiments, can solve the problems of unrealistic simulation and prediction, the deviation of the cross flow of the hole wall from the linear model, etc.
Active Publication Date: 2021-11-16
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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Problems solved by technology
[0006] The purpose of the invention of this application is to determine the perforation flow resistance coefficient mainly based on the small disturbance linear assumption, and then evaluate the performance of the perforation and the influence of interference. It is affected by the boundary layer along the wall and the main airflow, which makes the hole wall cross flow Obviously deviate from the linear model, and the complex structure of thousands of holes on the wall makes the simulation prediction impossible to achieve in a short period of time. A device and method for measuring the cross flow characteristics of the hole wall are provided
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Embodiment 1
[0076] This embodiment provides a device for measuring the lateral flow characteristics of the hole wall and a measuring method thereof. Wherein, the measuring device includes a main body for stabilizing pressure measuring 2, a pressure equalizing orifice plate 3, a hole wall test piece 1, a flow tube 4, a flow meter 10, a pressure measuring tube 5, a mobile measuring component, and a pressure sensor.
[0077] Such as figure 2 As shown, the voltage stabilizing measuring body 2 is in the shape of a barrel with one end open, and the section along its axial direction is U-shaped. In order to weaken or eliminate the disturbance of the cross flow on the hole wall to the airflow in the main body 2 of the pressure stabilization measurement, the main body 2 of the pressure stabilization measurement is designed as a combination of circular tube and hemispherical welding, with an aspect ratio ≥ 3.5. More specifically, the voltage stabilizing measuring body 2 is welded by a first circu...
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The invention discloses a device for measuring the lateral flow characteristics of a hole wall and a method for measuring the device. Components, pressure sensors; the main body of the voltage stabilization measurement is in the shape of a barrel with one end open, the opening end of the voltage stabilization measurement body is recorded as the first working end, and the end of the voltage stabilization measurement body opposite to the first working end is recorded as the second working end A gas flow end, the cavity inside the pressure stabilizing measuring body constitutes a stabilizing cavity; Constitute the first cavity. The present invention can realize the continuous fine measurement of the flow near the wall in the boundary layer of the hole wall under real test conditions, quickly establish the relationship between the flow parameters such as the cross-flow velocity, the boundary layer and the pressure distribution of the wall plate, and innovatively qualitatively and Quantitatively analyze the distribution and influence law of cross-flow velocity on the hole wall.
Description
technical field [0001] The application relates to the field of wind tunnel experiments, in particular to a measuring device and a measuring method for the cross-flow characteristics of a hole wall. More specifically, the application provides a plenum device for testing the cross-flow characteristics of the wind tunnel wall, and its measurement method, which can be used in the design and correction of the wall plate of the transonic wind tunnel test section, with high application value. Background technique [0002] Open-hole wall plate is one of the main forms of the transonic wind tunnel test section; in the subsonic range, the hole wall can effectively reduce the blockage interference of the model and reduce the airflow velocity correction; in the transonic range, the hole wall can form Uniform hyposonic flow fields and reduced model-induced wave reflection disturbances. The determination of the opening form and hole parameters is one of the key technologies in the desig...
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IPC IPC(8): G01M9/00G01M9/02G01M9/06G01M9/08
CPCG01M9/00G01M9/02G01M9/06G01M9/08
Inventor 刘光远郭秋亭李为群杨可杨昕鹏陈植陆连山谢易吴安达
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT