Affiliation: | 1. Faculty of Sciences and Technics, Physics Department , Sultan Moulay Slimane University, Laboratory of Flows and Transfers Modelling (LAMET) , Béni-Mellal , Morocco elayachi@fstbm.ac.ma;4. r_elayachi@hotmail.com;5. Faculty of Sciences and Technics, Physics Department , Sultan Moulay Slimane University, Laboratory of Flows and Transfers Modelling (LAMET) , Béni-Mellal , Morocco;6. Faculty of Sciences Semlalia, Physics Department , Cadi Ayyad University, Laboratory of Fluid Mechanics and Energetics (LMFE), Unit affiliated to CNRST (URAC, 27) , Marrakech , Morocco |