Computation of turbulent flow in general domains

P. Wesseling, M. Zijlema, A. Segal and C.G.M. Kassels

Mathematics and Computers in Simulation (MATCOM), 1997, vol. 44, issue 4, 369-385

Abstract: The computation of incompressible turbulent flow with two-equation closure models (k-ε and k-ω) is considered. The Cartesian staggered grid approach is generalized to general boundary-fitted coordinates. An accurate discretization on nonsmooth grids is presented. For higher-order monotone discretization of the equations for the turbulence quantities, flux-limited versions of the k-scheme are developed. In order to better assess the relative merits of explicit and implicit time discretization, a new approach to obtain von Neumann stability conditions is presented. A comparison is made between physical time scales for direct and large-eddy simulation, and stability restrictions on the time step for explicit schemes. Applications are presented for stationary turbulent flow computations with the k-ω model.

Date: 1997
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Persistent link: https://EconPapers.repec.org/RePEc:eee:matcom:v:44:y:1997:i:4:p:369-385

DOI: 10.1016/S0378-4754(97)00064-5

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