Normal condition at wall

General Discussion
1

Dear all

I have a problem in defining my boundary condition.
I have to define a jet on a wall (1) whose direction is normal to the wall and I just have the abs value of the jet so Vj= Aj*(N.x+N.y) ? Aj is the magnitude. now how I can define it to solve the equation?
on(1,ux=AjN.x,uy=AjN.y)?!

2

yes , but warning its this you jet is not like a Poisseuille flow because you normal is given by A
of coarse A could be a function of (x,y)…

on(1,ux= N.x*A,uy=Ny*A),

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