Pressure gradient in complex geometries

Dear all

I am working on a 2-D channel flow past a circular cylinder with a considerable pressure gradient. As far as I know, body force is used to simulate the pressure gradient in simple geometries. In this case, where the pressure gradient is unknown before simulations, how can I implement the pressure gradient?



If you don’t know the pressure gradient, you may find it useful to implement velocity boundary conditions instead of pressure boundary conditions.