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Molecular-level simulation of compressible turbulence

Gallis, Michail A.; Bitter, Neal B.; Torczynski, J.R.

The Direct Simulation Monte Carlo (DSMC) method of molecular gas dynamics (MGD) has been used for more than 50 years to simulate rarefied gas flows. Modern supercomputers have brought higher-density near-continuum flows within range. In the present paper, DSMC is used to study compressible turbulence in the Taylor-Green (TG) vortex flow. The DSMC results are compared to available numerical results from Direct Numerical Simulation (DNS) of the (continuum) Navier-Stokes equations.