Direct numerical simulation of high-temperature turbulent boundary layer with chemical nonequilibrium

被引：2
|
作者：
Liu P. [1 ,2 ]
Yuan X. [1 ,2 ]
Sun D. [1 ,2 ]
Fu Y. [1 ,2 ]
Li C. [1 ,2 ]
机构：
[1] State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang
[2] Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2022年 / 43卷 / 01期
关键词：
Chemical nonequilibrium; DNS; High-temperature; Hypersonic flow; Scaling law; Turbulent boundary layer;
D O I：
10.7527/S1000-6893.2020.24877
中图分类号：
学科分类号：
摘要：
Under specific flying conditions, interaction between turbulence and chemical nonequilibrium will occur on hypersonic vehicle surfaces; however, related research is limited. Choosing the flow state after the leading shock of a cone and utilizing two gas models, i.e. the calorically perfect gas and the chemical reaction gas, we conduct a Direct Numerical Simulation (DNS) study to analyze the effects of chemical nonequilibrium on the turbulence statistics and fluctuations, and investigate the scaling law. The results show that the endothermic dissociated reaction is dominant in the boundary layer, significantly reducing the average temperature and temperature fluctuation. However, chemical nonequilibrium only have a small influence on the average streamwise velocity, velocity fluctuation and Reynold stress. In the log-region, the Extended Self-Similarity(ESS) of the fluctuations is still consistent with the scaling law. © 2022, Beihang University Aerospace Knowledge Press. All right reserved.
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  • [1] MOIN P, MAHESH K., DIRECT NUMERICAL SIMULATION: A tool in turbulence research, Annual Review of Fluid Mechanics, 30, 1, pp. 539-578, (1998)
  • [2] PIROZZOLI S., Numerical methods for high-speed flows, Annual Review of Fluid Mechanics, 43, pp. 163-194, (2011)
  • [3] LI X L., Direct numerical simulation techniques for hypersonic turbulent flows, Acta Aeronautica et Astronautica Sinica, 36, 1, pp. 147-158, (2015)
  • [4] SUN D, LIU P X, TONG F L., Effect of spanwise oscillation on interaction of shock wave and turbulent boundary layer, Acta Aeronautica et Astronautica Sinica, 41, 12, (2020)
  • [5] SUN D, LIU P X, SHEN P F, Et al., Direct numerical simulation of shock wave/turbulent boundary layer interaction in a hollow cylinder-flare configuration at Ma 6, Acta Aeronautica et Astronautica Sinica, 42, 6, (2021)
  • [6] MARTIN M P, WEIRS V G, CANDLER G V., DNS of reacting hypersonic turbulent boundary layer, 29th AIAA Fluid Dynamics Conference, (1998)
  • [7] PIN M, CANDLER G., DNS of a Mach 4 boundary layer with chemical reactions, 38th Aerospace Sciences Meeting and Exhibit, (2000)
  • [8] MARTIN M, CANDLER G., Temperature fluctuation scaling in reacting boundary layers, 15th AIAA Computational Fluid Dynamics Conference, (2001)
  • [9] MARTIN M P., Exploratory study of turbulence/chemistry interaction in hypersonic flows, 36th AIAA Thermophysics Conference, (2011)
  • [10] DUAN L, MARTIN M P., Effect of finite-rate chemical reactions on turbulence in hypersonic turbulence boundary layers, 47th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, (2009)
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