A Numerical Study for Small Amplitude T-S Waves in a Supersonic Boundary Layer
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摘要: 对来流马赫数Ma∞=45的平板边界层中,幅值A分别为来流速度的0.01,0.001,0.0001倍的扰动波传播的物理过程进行了直接数值模拟。计算采用NND格式。模拟中发现即使扰动幅值尚小时,流场中即已出现小激波。Abstract: The propagation of the disturbance waves in a boundary layer at Mach number=4.5 is studied by direct numerical simulation(DNS),using NND scheme,and different amplitudes A=0.01,0.001,0.000 1 of the disturbance have been assumed.The numerical result shows that there might be shocklets induced in the boundary layer,even when the amplitude of disturbance wave is still small.
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Key words:
- direct numerical simulation /
- shocklet /
- compressible boundary layer
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[1] 张涵信. 无波动、无自由参数的耗散差分格式[J]. 空气动力学学报,1988,6(2):143-164.
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