Abstract
In the present paper, an implicit time accurate approach, combined with multigrid is used for the Large-Eddy Simulation (LES) of compressible flows. The multigrid scheme is used as a driver for a fully implicit time stepping scheme. The time derivative is approximated by a second order backward difference formulation. The channel flow is considered as test case. Comparison with a purely explicit approach using a second order and four stages Runge-Kutta method shows that the explicit scheme is 40–50% more expensive in CPU time.
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Lessani, B., Smirnov, S., Lacor, C., Baelmans, T., Meyers, J. (2000). Efficient Large-Eddy Simulations of Compressible Flows Using Multigrid. In: Dick, E., Riemslagh, K., Vierendeels, J. (eds) Multigrid Methods VI. Lecture Notes in Computational Science and Engineering, vol 14. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-58312-4_22
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DOI: https://doi.org/10.1007/978-3-642-58312-4_22
Publisher Name: Springer, Berlin, Heidelberg
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