LESによる圧縮性平板境界層の乱流遷移に関する研究(<小特集>:LES(ラージエディシミュレーション))

概要

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Large eddy simulation (LES) of compressible boundary layer including transition to turbulence was successfully done at Mach number of 0.3 and Reynolds number of 10^5. Although there are many studies focused on incompressible turbulence, there has recently emerged the interest in LES for compressible turbulence. A compressible Smagorinsky-type eddy viscosity model was proposed and employed in this simulation. It was shown that the present simulation recreates well not only the time-averaged quantities but velocity fluctuations such as root-mean square of turbulence intensities. Also, the present LES gives 3D detailed structure of streak and bursting phenomena, which is difficult to simulate by using Reynolds averaged turbulence models.
一般社団法人日本機械学会の論文
2000-11-25