Research of simulation method for inlet flow steady-state distortion based on momentum exchange

ZHANG Xiaofei

doi:10.11729/syltlx20210070

Volume 36 Issue 4

Sep. 2022

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Journal of Experiments in Fluid Mechanics > 2022 > 36(4): 77-83. > DOI: 10.11729/syltlx20210070

ZHANG X F. Research of simulation method for inlet flow steady-state distortion based on momentum exchange[J]. Journal of Experiments in Fluid Mechanics, 2022，36（4）：77-83.. DOI: 10.11729/syltlx20210070

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Research of simulation method for inlet flow steady-state distortion based on momentum exchange

ZHANG Xiaofei^,

Chinese Flight Test Establishment, Xi’an　710089, China

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Received Date: July 15, 2021
Revised Date: September 28, 2021
Accepted Date: November 21, 2021
Available Online: September 22, 2022

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Abstract

Abstract

In order to simulate the steady-state total pressure distortion at the inlet of aero-engine, a new distortion generation method is studied and validated. After establishing the control model of steady state total pressure distortion generation in flow field, the distortion generator technical verification machine is developed, and the ground distortion simulation test-bed is built. Using it, three typical flow fields in different configuration of steady state total pressure distortion have generated demonstratively, and the simulation error is between 2.7% to 5.2%. The experimental results show that: The air jet distortion generator based on the airflow momentum exchange mechanism generates the expected steady-state total pressure distortion directly to flow field configuration, which can rapidly realize arbitrary flow field distortion by controlling the position and mass of the jet flow in the mainstream area by “soft adjustment”, and with low cost. It has obvious advantages and engineering practical value.
- distortion simulating,
- momentum exchange,
- distortion generator,
- flow field configuration

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