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NUMERICAL TESTS OF FAR-FIELD BOUNDARY CONDITIONS FOR STABLY STRATIFIED FLOWS

T. Bodnár, Ph. Fraunié, H. Řezníček
2019 Topical Problems of Fluid Mechanics 2019   unpublished

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This numerical study presents the results of simulations of stably stratified wall-bounded flows. The effect of artificial far-field boundary conditions is studied in detail. The standard homogeneous Neumann condition for pressure is replaced by a non-homogeneous condition depending on local velocity and its gradient. The two-dimensional tests are performed for the case of flow over a low isolated hill. The simulations on computational domains with three different heights are discussed to
more » ... te the performance of the new far-field artificial boundary condition. The model is based on Boussinesq approximation of non-homogeneous Navier-Stokes equations, solved using artificial compressibility method, looking for a steady solution.
doi:10.14311/tpfm.2019.003 fatcat:tkyle57ktjgjlo5vj54yx5vyf4
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T. Bodnár, Ph. Fraunié, H. Řezníček. "NUMERICAL TESTS OF FAR-FIELD BOUNDARY CONDITIONS FOR STABLY STRATIFIED FLOWS." Topical Problems of Fluid Mechanics 2019 (2019)