[Aladinos05]

Hi everybody!
I have a problem and I ' ll appreciate any help ! I am simulating the fluid flow through a centrifugal pump but I am having a reversed flow at the outlet !this problem appears Right after starting the calculation, ! My BC is velocity in-pressure out ! I am wondering if this can't affect the results in a way or another! Another question is about the pressure prediction at the inlet ! it is always negative (-) ! I think this can't allow me to calculate the total developed Head and all other head related parameters! Is there any method I can use to have positive values of pressure at the inlet ! I just started using this software so I do not know much about it !! thank u