The total temperature in the hypersonic wind tunnel test can be significantly different from that in real flight conditions, and this leads to a large discrepancy in the measurement of the boundary layer transition between ground experiment measurements and flight tests. Even at the same Mach number and Reynolds number, different wind tunnels may yield different transition data for the same model due to the total temperature effect. In this paper, the boundary layer transition on a 7° half-angle sharp cone (at a 0° angle of attack) with four freestream total temperatures is investigated using both the simulations of a local correlation-based transition model and linear stability analysis. The results show that as the freestream total temperature increases, the starting point of the transition on the sharp cone gradually moves backward and the length of the transition region decreases. The N factor of the unstable wave gradually decreases with increasing freestream total temperature, causing the transition onset to move backward. The total temperature effects on boundary transition as determined by both methods of analysis were in good agreement.
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November 2019
Research Article|
November 20 2019
Numerical study of total temperature effect on hypersonic boundary layer transition
Jinshan Zhao (赵金山)
;
Jinshan Zhao (赵金山)
1
College of Aerospace Science and Engineering, National University of Defense Technology
, Changsha 410073, China
2
Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center
, Mianyang 621000, China
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Sen Liu (柳森);
Sen Liu (柳森)
1
College of Aerospace Science and Engineering, National University of Defense Technology
, Changsha 410073, China
2
Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center
, Mianyang 621000, China
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Lei Zhao (赵磊)
;
Lei Zhao (赵磊)
2
Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center
, Mianyang 621000, China
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Zhigang Zhang (张志刚)
Zhigang Zhang (张志刚)
2
Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center
, Mianyang 621000, China
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Physics of Fluids 31, 114105 (2019)
Article history
Received:
August 20 2019
Accepted:
October 29 2019
Connected Content
A companion article has been published:
Total temperature affects hypersonic boundary layer transition
Citation
Jinshan Zhao, Sen Liu, Lei Zhao, Zhigang Zhang; Numerical study of total temperature effect on hypersonic boundary layer transition. Physics of Fluids 1 November 2019; 31 (11): 114105. https://doi.org/10.1063/1.5125116
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