A COLLOCATED FINITE VOLUME SCHEME WITH AN INTEGRAL FORMULATION FOR FLOWS WITH FLUID SECTION JUMPS

Abstract : We focus here on an integral approach to compute compressible or incompressible fluid flows in physical congested domains with discontinuous fluid sections. This approach is based on a multidimensional integral formulation of the fluid model equations and aims at unifying the porous approach used at component scale and CFD used at local scale. Its discretization uses a semi-implicit collocated finite volume scheme with an incremental pressure-correction algorithm, implemented in the open-source CFD software Code Saturne, version 6.0. Numerical tests are completed by simulating a plane steady-channel flow with a fluid section jump. The results are compared to the analytical solution and the computation obtained with a standard equivalent porous model.
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Clément Colas, Martin Ferrand, Jean-Marc Hérard, Erwan Le Coupanec. A COLLOCATED FINITE VOLUME SCHEME WITH AN INTEGRAL FORMULATION FOR FLOWS WITH FLUID SECTION JUMPS. Advances in thermal Hydraulics, Mar 2020, Saclay, France. ⟨hal-02422792⟩

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