The compliance verification of thermodynamic flowfield in the large icing wind tunnel

GUO Xiangdong; ZHANG Pingtao; ZHAO Xianli; YANG Shengke; LIN Wei

doi:10.11729/syltlx20190113

Volume 34 Issue 5

Oct. 2020

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Journal of Experiments in Fluid Mechanics > 2020 > 34(5): 79-88. > DOI: 10.11729/syltlx20190113

GUO Xiangdong, ZHANG Pingtao, ZHAO Xianli, YANG Shengke, LIN Wei. The compliance verification of thermodynamic flowfield in the large icing wind tunnel[J]. Journal of Experiments in Fluid Mechanics, 2020, 34(5): 79-88. DOI: 10.11729/syltlx20190113

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The compliance verification of thermodynamic flowfield in the large icing wind tunnel

Key Laboratory of Icing and Anti/De-Icing, China Aerodynamics Research and Development Center, Sichuan Mianyang 621000, China

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Received Date: September 09, 2019
Revised Date: November 14, 2019

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Abstract

Abstract

The compliance of thermodynamic flowfield in the large icing wind tunnel is the precondition for the airworthiness application of the large icing wind tunnel. In order to verify the compliance of the thermodynamic flowfield in the CARDC icing wind tunnel, a verification method is established firstly, and then a verification test is conducted for the main test section. The influences of the test section total temperature, velocity and the nozzle dry air jet flow on the spatial uniformity and temporal stability of thermodynamic flowfield are examined, and the correction relationship of the test section total temperature is obtained. Finally, the thermodynamic flowfield operating envelop is built. Results show that decreased test section total temperature and increased test section velocity could reduce the spatial uniformity of the thermodynamic flowfield in the test section for the actual refrigeration system of the CARDC icing wind tunnel, but have no obvious effects on the temporal stability of the thermodynamic flowfield. The nozzle dry air jet flow could increase the test section total temperature, while it has no significant influence on the spatial uniformity and temporal stability of the thermodynamic flowfield. The quality of the thermodynamic flowfield of the CARDC icing wind tunnel in the main test section almost meets the requirement of SAE ARP 5905-2003 under the main test condition.
- aircraft icing,
- icing wind tunnel,
- main test section,
- thermodynamic flowfield,
- compliance verification

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The compliance verification of thermodynamic flowfield in the large icing wind tunnel

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