Ifp Energies Nouvelles

Thibaud Mouton

Chakib Bennis

Houman Borouchaki

Frédéric Roggero

This method for evaluating fluid flows in a heterogeneous medium, uses a hybrid grid constructed from a CPG type structured grid and from a radial grid. The first stage includes locally deforming a CPG type grid into a non-uniform Cartesian grid. These local grid cell deformations correspond to the change from a 'CPG' frame to a 'Cartesian' frame defined by the deformation. These deformations are then quantified, by a deformation function &#x3c6;, and applied to the radial grid so as to shift to the &#x201c;Cartesian&#x201d; frame. The second stage includes locally correcting the definition of this deformation function around the radial grid, so that the radial grid, in the &#x201c;Cartesian&#x201d; frame, keeps its geometrical characteristics. A hybrid grid is then generated in the &#x201c;Cartesian&#x201d; frame from the two grids thus deformed. Finally, this hybrid grid is deformed to return to the &#x201c;CPG&#x201d; frame, using the inverse of deformation function &#x3c6;.

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Saint-Cyr-du Conceray, France

Thibaud Mouton