Automatic grid adaptation for unstructured finite volumes

Jeroen Wackers (1) , Michel Visonneau (1) , Zaib Ali (1)

1 LHEEA - Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique

An automatic grid refinement method is presented for the simulation of ship flows. It provides directional refinement of unstructured grids and derefinement of refined grids for unsteady simulation, it is fully parallel and includes automatic dynamic load balancing. Different refinement criteria are implemented. Results are presented that confirm the increased accuracy of solutions obtained on refined grids. Refinement around the water surface proves to be very effective for the simulation of strong breaking waves. A pressure gradient criterion is shown to detect the main features of a ship flow and to be able to generate effective fine grids in their entirety.

Mots clés: error indicator; automatic mesh refinement; ship flows; finite-volume; parallel implementation

Domaines: Mécanique des fluides [physics.class-ph]; Analyse numérique [math.NA]

Jeroen Wackers, Michel Visonneau, Zaib Ali. Automatic grid adaptation for unstructured finite volumes. International Journal of Engineering Systems Modelling and Simulation, 2010, 2 (1-2), ⟨10.1504/IJESMS.2010.031866⟩. ⟨hal-01203056⟩