Research on the double-inlet test method in low speed wind tunnel

TANG Jianping; SHANG Yinhui; LI Dong; WU Chaojun; XU Binbin; JIN Ling

doi:10.11729/syltlx20220059

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TANG J P，SHANG Y H，LI D，et al. Research on the double-inlet test method in low speed wind tunnel[J]. Journal of Experiments in Fluid Mechanics, doi: 10.11729/syltlx20220059.

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TANG J P，SHANG Y H，LI D，et al. Research on the double-inlet test method in low speed wind tunnel[J]. Journal of Experiments in Fluid Mechanics, doi: 10.11729/syltlx20220059.

Citation:

TANG J P，SHANG Y H，LI D，et al. Research on the double-inlet test method in low speed wind tunnel[J]. Journal of Experiments in Fluid Mechanics, doi: 10.11729/syltlx20220059.

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Research on the double-inlet test method in low speed wind tunnel

1.
China Aerodynamics Research and Development Center, Mianyang　621000, China
2.
Chengdu Aircraft Industrial （Group） Co. LTD., Chengdu　610092, China

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Received Date: June 29, 2022
Revised Date: September 29, 2022
Accepted Date: October 12, 2022
Available Online: November 30, 2022

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Abstract

Abstract

In order to meet the requirement of the double-inlet test in the 4 m magnitude low speed wind tunnel, a test method of the double-inlet test in the 4 m × 3 m low speed wind tunnel of LSAI of CARDC was proposed. According to the method, a model is supported by one pole, and each inlet mass flow is simulated and controlled by an ejector with a digital pressure regulating valves system. In this method, the range of AOA is −10°～90°, the range of AOS is −45°～45°, the simulating maximum of the double-inlet mass flow is 2.9 kg/s and 1.4 kg/s. To validate the method, a double-inlet test was completed in the low speed wind tunnel. The test results show: the model is less affected by pipeline aerodynamics. The independent model and ejector support mechanism meets various model support requirements. Double inlets mass flow simulation and control are completely independent, which meets the requirement of studying interactions for double inlets.
- double-inlet,
- low speed wind tunnel test,
- ejector,
- digital pressure regulating valve,
- mass flow simulation

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