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Basics : Rugosity flow

This LS-DYNA simulation shows an atmospheric air flow going over a rough surface. The Standard k-epsilon model is activated through the use of ICFD_CONTROL_TURBULENCE. Furthermore, the rugosity parameters have been defined. The user is invited to change those parameters and check the influence on the surface shear vector. The mesh size has been chosen so that a Y+ of approximately 30 is maintained over the domain.