sci.physics.computational.fluid-dynamics

On Tue, 11 Mar 2008 01:50:05 -0700 (PDT), in
sci.physics.computational.fluid-dynamics Victor
wrote:

>Hi
>
>I am solving a flow problem around a cylinder using finite differences
>and I have a grid size question. The question is not about stability
>(my grid is stable), but about accuracy. When I have a problem that
>has one result (a certain number) I set my grid and my convergence
>values so the first 3 or 4 significant digits of the wanted result.
>However, in my case I solve a shear 2D flow around a cylinder and I
>don't really have one resulting parameter. What are the common ways to
>determine when the grid is fine enough?

Total drag?