SIMPLE_ Pressure Boundary condition at the pipe wall
 

hello all

i want to write a computer code to solve Navier-Stokes equation (internal flow) by using SIMPLE algoritym. for pressure correction equation (possion equation), i need pressure boundary conditions at the pipe wall. what kind of boundary equation can be used at there.

sorry for my bad english

At the walls you specify the velocity (no slip) not the pressure. If you need the pressure at the wall you can interpolate from the interior nodes

but there are no point to interpolate at the walls.you mean p(surface) equal p(surface-1)?