The model is simple, I use rectangle as my geometry(0.1505m*0.006m) ,and chose laminar flow as my module, then assign inlet boundary condition, which is pressure boundary,10[Pa], outlet condition is 0[Pa], other two boundaries are no slip boundaries. Initial value(velocity and pressure) are specified with 0. After running model, I found outlet flux(1.4441e-6m^2/s) is not equals to inlet flux(1.4491e-6 m^2/s). How does this happen even though I refine the mesh of model? Is this due to resolution of Comsol? Any help will be appreciated. Thanks a lot.
By the way, if I use a more complex geometry, then the outlet flux will more than up to 17% of inlet flux in spite of very finer mesh.
By the way, if I use a more complex geometry, then the outlet flux will more than up to 17% of inlet flux in spite of very finer mesh.