I recalculate again and again it appear it is a turbulant flow so I am viscous turbulent flow.nonce I finish that I will try to modify the structure So I can transfer turbulent flow to laminar, so If I used the viscous turbulant on the new structure the result can be declared as optimization since I already optained some primary results and it show that the flow is turning o laminar.nmy question is if this logic is correct? n