Inflow conditions for spatial direct numerical simulation of turbulent boundary layers
作者： ZhangFeng Huang , Heng Zhou
DOI: 10.1007/S11433-008-0093-7
关键词: Mach number 、 Classical mechanics 、 Turbulence 、 Root mean square 、 Inflow 、 Mechanics 、 Mean flow 、 Direct numerical simulation 、 Boundary layer 、 Reynolds stress 、 Physics
摘要: The inflow conditions for spatial direct numerical simulation (SDNS) of turbulent boundary layers should reflect the characteristics upstream turbulence, which is a puzzle. In this paper new method suggested, in flow field obtained by using temporal (TDNS) fully developed (only single moment sufficient) can be used as SDNS with proper transformation. calculation results confirm that feasible and effective. It also found that, under time-space transformation, all statistics turbulence both mode DNS are excellent agreement each other, not only qualitatively, but quantitatively. normal-wise distributions mean profile, Mach number root square (RMS) fluctuations various variables, well Reynolds stresses SDNS, bear similarity nature.
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