Dear cfd forum members can you be of help on these, I can estimate or at least say how my boundary layer thickness, let say del grows along the downstream flow say x, if I have to set my grid expansion ratio, is my knowledge of the b.l. growth help me to determine it, or I should use only trial error. is there any heuristic approach to arrive the optimum expansion value, any explanation is appreciated, or if u could also site me a book or a paper or inernet link can be helpful too. thanks in advance taw

so no one could be of help, once again any small help still appreciated taw