A NONORTHOGONAL FINITE-VOLUME METHOD FOR THE SOLUTION OF ALL SPEED FLOWS USING CO-LOCATED VARIABLES

Abstract The use of the segregated finite-volume method requires special procedures for handling the pressure-velocity coupling. It is a normal practice to employ staggered grids to promote the adequate coupling between pressure and velocity. However, this alternative becomes unfeasible for three-dimensional problems, especially if boundary-fitted grids are employed. In this work a numerical model employing co-located variables is developed. The model uses nonorthogonal boundary-fitted meshes and is therefore suitable for the solution of all speed flows, considering the extra coupling between pressure and density. Results are obtained for selected test cases, including incompressible as well as supersonic flows, which are compared with experimental ones.

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