| Popis: |
The slip boundary condition often used in numerical computation of flow problems is examined to find its influence on the solution when there is a rotational body force field. Two specific examples are considered having different force distributions that are generated electromagnetically. The numerical study shows that in a fluid region weakly affected by the body force, a slip wall can be used to approximate a realistic no-slip solid surface if the reynolds number is reasonably large. On the other hand, in a region where the body force has a strong effect, a no-slip wall may never be replaced by a slip wall even if the Reynolds number is extremely high. |
