Author(s)

S. Ouillon & D. Dartus

Abstract

A porosity method to compute 3d turbulent free surface flows S. Ouillon, D. Dartus Institute de Mecanique des Fluides de Toulouse, 2, Alice du Professeur C. Soula, 31400 Toulouse, France ABSTRACT A method used to track a moving surface boundary and to follow its evolution, using a one-phase three-dimensional (3D) Reynolds solver, with rigid grids, by means of a transient porosity field is exposed The porosities are geometric factors which multiply, before being used in the transient, convective, diffusive and source terms, the areas and volume of cells in the computational domain. The free surface is located in cells with a porosity varying between zero and one. A description of the algorithm used to compute the free surface evolution is given. The computation of the free surface evolution is associated with the choice for appropriate boundary conditions and with the flow field calculation. Results of a test case on the flow around a groyne are given. The isolines of water dept

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