Method for measuring airflow direction angle of flow field
A technology for measuring airflow direction and angle. It is used in velocity/acceleration/impact measurement, measurement devices, instruments, etc. It can solve the problems of low measurement accuracy and difficulty in meeting the test needs of engine components, and achieve the effect of improving measurement accuracy.
Active Publication Date: 2014-10-08
CHINA AVIATION POWER MACHINE INST
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[0006] The purpose of the present invention is to provide a method for measuring the airflow direction angle used in the flow field to solve the technical problem that the existing airflow direction angle measurement accuracy is not high and it is difficult to meet the needs of engine component tests
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[0024] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0025] refer to figure 1 , the preferred embodiment of the present invention provides a method for measuring the angle of the airflow direction of the flow field. The flow field of this embodiment is a flow field used for aero-engine component tests, such as the turbine, compressor and other components of the aero-engine. Verification test. Since accurate flow field parameters are crucial to calculating the performance of the component in the component test, the measurement accuracy of the airflow direction angle of the flow field is required to be high in this embodiment. In this example, refer to figure 1 , the measurement method includes the following steps:
[0026] Step S101, setting the multi-hole total pressure direction sensor in the flow f...
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The invention discloses a method for measuring an airflow direction angle of a flow field. The method comprises the following steps: arranging a porous total pressure direction sensor in the flow field, adjusting the porous total pressure direction sensor through an automatic direction tracking device, and aligning the porous total pressure direction sensor to the airflow direction of the flow field; obtaining a first airflow direction angle of the flow field according to a pressure value obtained through measurement of the porous total pressure direction sensor and a pressure-direction calibration curve of the porous total pressure direction sensor; obtaining a direction tracking angle of the porous total pressure direction sensor through the automatic direction tracking device, and obtaining a second airflow direction angle by revising the first airflow direction angle through the direction tracking angle. By means of the method for measuring the airflow direction angle of the flow field, the first airflow direction angle obtained through detection of the porous total pressure direction sensor is revised by detecting the direction tracking angle of the porous total pressure direction sensor, so that the accurate airflow direction angle of the flow field is obtained, and the measurement precision of the airflow direction angle is improved to meet the requirement for testing aero-engine parts.
Description
technical field [0001] The invention relates to the field of detection of aero-engine components, in particular to a method for measuring an airflow direction angle in a flow field test of an aero-engine component test. Background technique [0002] At present, the design of the new aero-engine and the improvement and remodeling of the engine are verified through tests at home and abroad. In its component test, it is particularly important to accurately test the distribution of flow field parameters to calculate component performance and verify design results. At present, the following methods are mainly used to test the angle field of the outlet airflow direction of aero-engine components (turbine, compressor): [0003] Method 1: It uses the porous pressure sensor clamped on the displacement mechanism to realize the point-by-point scanning of the flow field, and uses the displacement mechanism to automatically follow the direction of the device to measure the direction ang...
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IPC IPC(8): G01P13/02
Inventor 刘宏博刘龙初刘臣勇
Owner CHINA AVIATION POWER MACHINE INST