Slip boundary for N.S.
Does anyone know how to implement a slip (free slip) boundary condition via coefficient manipulation. The discretization equation is: a_p*u_p = a_n*u_n + a_s*u_s + a_e*u_e + a_w*u_w.
It has to work on structured mesh with pipeline structure, where the fluid flows 45 degrees on the axis.
I will be very greatful if someone could help me out!
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