Computational investigations into heat transfer over a double wedge in hypersonic flows
Computational investigations into heat transfer over a double wedge in hypersonic flows
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DOI：
10.1016/j.ast.2019.07.013
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发表时间：
2019-09
影响因子：
5.6
通讯作者：
D. Exposito;Z. Rana
中科院分区：
文献类型：
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作者：
D. Exposito;Z. Rana
最近开发的OpenFOAM applicationhy 2FOAM被用来预测的气动传热数值和来自伊利诺伊大学的实验数据进行比较。假设化学和热不平衡，数值模拟了马赫数为7、滞止焓为2.1 MJ/kg的氮气流，以及马赫数为7、滞止焓为8 MJ/kg的氮气和空气在双楔形几何形状上的流动。已观察到良好的协议的平均传热曲线，虽然没有一个模拟实现了稳态。高焓空气情况下的再附着换热峰与实验数据的一致性有所提高，这是由于流场的非平衡性。
Recently developed OpenFOAM applicationhy2FOAMis employed to predict the aerodynamic heat transfer numerically and compared with the experimental data from the University of Illinois. Mach 7 nitrogen flow at 2.1 MJ/kg stagnation enthalpy, and Mach 7 nitrogen and air flows at 8 MJ/kg stagnation enthalpy over a double wedge geometry have been reproduced numerically assuming chemical and thermal non-equilibrium. Good agreement of mean heat transfer profiles has been observed, although none of the simulations achieved a steady-state. The reattachment heat transfer peak in the high enthalpy air case showed an improved agreement with the experimental data, which is due to the non-equilibrium in the flow field.