Hi, I am doing a flow field calculation like http://www.ctcms.nist.gov/fipy/examples/flow/generated/examples.flow.stokesCavity.html
However, I obtain spurious oscillations for the pressure solution. Patankar in his works is very clear that a staggered grid should be used for the SIMPLE algorithm, in the example averaging is applied so as to work on one grid, which I believe leads to these oscillations. Does anybody has an idea how best to alleviate this problem? I am thinking about eg a CornerCellVariable for vx/vy, which would be the staggered grid. In essense that means a mesh holds two grids then. It becomes complicated fast however. Perhaps other ideas? Or better to calculate the flow field with another tool? Greetings, Benny
