sci.physics.computational.fluid-dynamics

On Mar 11, 2:06 pm, m...@mine.net wrote:
> 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?

Though about it, but it's a Couette shear flow. Drag is zero.