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Formulation of wall boundary conditions in turbulent flow computations on unstructured meshes

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Abstract

Features of the formulation and numerical implementation of wall boundary conditions in turbulent flow computations on unstructured meshes are discussed. A method is proposed for implementing weak wall boundary conditions for a finite-volume discretization of the Reynolds-averaged Navier-Stokes equations on unstructured meshes. The capabilities of the approach are demonstrated in several gasdynamic simulations in comparison with the method of near-wall functions. The influence of the near-wall resolution on the accuracy of the computations is analyzed, and the grid dependence of the solution is compared in the case of the near-wall function method and weak boundary conditions.

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  1. Kingston University, London, SW15 3DW, UK

    K. N. Volkov

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  1. K. N. Volkov
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Correspondence to K. N. Volkov.

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Original Russian Text © K.N. Volkov, 2014, published in Zhurnal Vychislitel’noi Matematiki i Matematicheskoi Fiziki, 2014, Vol. 54, No. 2, pp. 336–351.

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Volkov, K.N. Formulation of wall boundary conditions in turbulent flow computations on unstructured meshes. Comput. Math. and Math. Phys. 54, 353–367 (2014). https://doi.org/10.1134/S0965542514020134

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  • DOI: https://doi.org/10.1134/S0965542514020134

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