I m not getting any problem with the watertight geometry and also the meshing in fluent.I m not understanding one thing. nI m doing this numerical in a Density-based solver. nmaterial air (Ideal gas) Viscosity - Sutherland.nCell zone conditions Fluid domain - Fluid nBoundary condition asnInlet mass flow inlet nOutlet - Pressure outlet. nWall - wall nfluid domain- interiornBut I m getting divergence error in the solution** I need to check that if the pressure is 4 bar at the inlet. n