We have chosen this task for two reasons : on one hand we were interested a lot in discovering a new industrial code, Star CD and on the other hand we wanted to work on a non usual type of flows : the viscoplastic flows and particularly the non-Newtonian and Bingham fluids. Indeed in our former studies, we had always worked with Newtonian fluids and we wanted to understand how this sort of flow is taken into account by industrial code and Star CD.

As a consequence, we needed to work a little on these two points before beginning the real study of Bingham fluids :