grid in FLUENT5.5and FLUENT 4.5
 

Hi: I use gambit to bulid up multi-block (0type and H type grid )in cylinder tube. I read it in Fluent 5.5 ,I can get good result . But When I read this grid in FLUENT 4.5, some place in grid will break . Can someome tell me What I should pay attention in FLUEN 4.5 ? How to use gambit to bulid o-type mesh cylinder ? and that can read in FLUENT 4.5?