MULTIGRID

Tiz

Hello everyone,

I am try to apply multigrid to a 2D Navier-Stokes Finite Volume solver. Although I am looking for a steady state solution, I solve the problem with a time marching approach. I manage to code the problem in a 1d simpler case, but moving to the 2d proved more complex than I thought. Any suggestions on how to do this?

Thanks in advance

P.S. I obtained the adjoint equation for the coarser grid. Once linearised, this looks very similar to the equation solved in the fine grid, but the coefficients are now multiplied by the corrections rather than by the actual variables. Everything works well in 1D, but I have serious troubles in 2D