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Questions overset interpolation with DyM very slow for large 3D cases |
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#1 |
Senior Member
Join Date: Jan 2014
Posts: 171
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Hi guys,
At the moment I am playing around with the new overset feature of OF 1706+. Everything is fine so far, I observed just for large 3D cases and moving mesh cabalities (for example a flapping 3D airfoil) a huge decrease in speed up (overPimpleDyMFoam). This is due to the cutting hole algorithm of the overset analysis itself. There are three kinds of interpolations possible: inverseDistance trackingInverseDistance cellVolumWeight. So which one would you recommend in order to speed up the cutting hole algorithm. Mesh is changing here every time. At the moment I am using inverseDistance approach by defining a searchBox with subsequent Divisions. Thanks in advance, |
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#2 |
Senior Member
Yann
Join Date: Apr 2012
Location: France
Posts: 181
Rep Power: 12 ![]() |
I'm working with overPimpleDyMFoam on a moving object in 3D meshes and I tried the 3 algorithms on the same case.
On my case, inverseDistance and trackingInverseDistance have pretty much the same speed, while cellVolumeWeight is way much longer (about 5 times longer than inverseDistance) Those tests have been done only on one case so I'm not sure this results is valid as a general rule. Furthermore, I used the default setup for the 3 algorithms. For inverseDistance, I've seen it's possible to specify 3 parameters : layerRelax, searchBox and searchBoxDivisions. How do you use the searchBox feature and did you notice a speed up with your setup compared to the default setup? |
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