[triple_lor]

Dear All,

There are plenty of information about power law velocity profile in pipe flow or in y-axis of channel flow. however, in reality the power law velocity profile might be in both x-axis and y-axis when fully developed.
i wrote an expression as inlet boundary condition:
Umax[m/s]*(1-abs(y-h/2[m])/(h/2)[m])^(1/7)
how can i evolve the velocity in x direction into the inlet velocity profile as well?

Many thanks!

[ghorrocks]

Your CEL function can include both X and Y (and Z for that matter) as inputs, so if you can define the 2D inlet velocity field as an algebraic function then simply implement it in CEL.

Note that you will probably have to define a coordinate system transformation. You might be able to simplify the coordinate transform by using a local coordinate system.