[bitacovir]

I'm using ElmerGUI as cfd software and I want to set up the velocity of the flow (wind). I understand this instruction of a tutorial is to create a parabolic profile of the flow in velocity 1...

Model
BoundaryCondition
Name = Inlet
Navier-Stokes
Velocity 1 = Variable Coordinate 2; Real MATC "4* 1.5 * tx * (0.41-tx)/0.41^2"
Velocity 2 = 0.0
Add
New

I understand that this equation (for a experiment 2D in a channel) "4* 1.5 * tx * (0.41-tx)/0.41^2" represents this profile:


I would need a equation for this kind of profile: That is for a curve of a boundary layer. Someone know how will be the equation for this curve to work with Elmer?