I observe sharp changes in the pressure which correspond to partition boundaries. What causes this and how can I correct it?
In general the location of partition boundaries does not affect the solution. However, there are at least 3 cases where this is not true: 1. When a partition boundary lies along a GGI interface 2. When a partition boundary lies along a free surface interface 3. When a partition boundary lies along high aspect ratio elements Basically these are all places where the equations are more difficult to solve, and adding a partition boundary at these locations causes problem. There are a few possible solutions: 1. In the case of high aspect ratio elements, improve the mesh to reduce the aspect ratio. 2. Run in serial. 3. Set the Partition Type to User Specified Direction, picking a direction that will avoid the problem area. |
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