[mariam.sara]

Hello I solve simple problem of water flow through a pipe its wall subjected to constant heat flux. I set Reynolds number as input parameter in CFX-pre and I wrote an expression for inlet velocity in terms of Re? I set different values of Re to obtain h but the velocity not changes respect to new Re (see pict please) and the solution not updated too in spite i press all design point what the problem?

mariam

[Antanas]

Originally Posted by mariam.sara

Hello I solve simple problem of water flow through a pipe its wall subjected to constant heat flux. I set Reynolds number as input parameter in CFX-pre and I wrote an expression for inlet velocity in terms of Re? I set different values of Re to obtain h but the velocity not changes respect to new Re (see pict please) and the solution not updated too in spite i press all design point what the problem?

mariam

I see you also set Ui as input parameter. In that case CEL expression for Ui won't work (Ui is bloked in CFX-Pre) and you should input it manually as design point parameter.
Try to set it as output parameter in CFD-Post. Or you may unset it as input parameter in CFX-Pre and create similar parameter in parameter table with similar expression. This parameter will be just a reference.

[mariam.sara]

1) in cfx-pre
2) I set both of Re & Ui which must change with Re as input parameters
3) Yes