Which informations needs the initialisation feature. Are these the boundary conditions to solve my streaming problem.

So, it's possible, that total wrong inputs result in an error of fluent.

hi gernot initilization means to give the intial guess for the iterative solution to begin with. it should be as close to the expected result as possible so to get quick and correct solution. it is not the boundary condition. they are difned by u and certainly be known and not guessed.

hope this helps.