A random flow generation (RFG) technique is presented, which can be used for initial/inlet boundary generation in LES (Large-Eddy-Simulations) or particle tracking in LES/RANS (Reynolds-Averaged Navier-Stokes) computations of turbulent flows. The technique is based on previous methods of synthesizing divergence-free vector fields from a sample of Fourier harmonics and allows to generate non-homogeneous anisotropic flow field representing turbulent velocity fluctuations. It was validated on the cases of boundary layer and flat plate flows. Applications of the technique to LES and particle tracking are considered.
Random Flow Generation Technique for Large Eddy Simulations and Particle-Dynamics Modeling
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division March 31, 2000; revised manuscript received February 16, 2001. Associate Editor: G. Karnia Dakis.
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Smirnov , A., Shi , S., and Celik, I. (February 16, 2001). "Random Flow Generation Technique for Large Eddy Simulations and Particle-Dynamics Modeling ." ASME. J. Fluids Eng. June 2001; 123(2): 359–371. https://doi.org/10.1115/1.1369598
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