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[swak4Foam] Moving surface (with swak4Foam perhaps?) |
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February 7, 2014, 15:08 |
Moving surface (with swak4Foam perhaps?)
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#1 |
New Member
Kostis
Join Date: Jan 2013
Posts: 6
Rep Power: 13 |
Hi guys,
Does anybody know if I can have a moving surface (maybe using swak). Something like : planeAverage { type swakExpression; valueType surface; surfaceName surface; surface { type plane; basePoint (0 $expression 0); normalVector (0 1 0); interpolate false; } verbose true; expression "blabla"; accumulations ( average ); } Thank you Kostis |
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February 10, 2014, 16:42 |
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#2 |
Senior Member
Ehsan
Join Date: Oct 2012
Location: Iran
Posts: 2,208
Rep Power: 26 |
what do you intend exactly? do you want to obtain averages on a moving wall? how it moves?
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February 11, 2014, 13:00 |
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#3 |
New Member
Kostis
Join Date: Jan 2013
Posts: 6
Rep Power: 13 |
Thank you for the answer.
I am simulating a falling droplet and I would like to define a moving surface inside my domain which will have fixed distance from the interface of the droplet in order to calculate the drag force by integrating the momentum flow rate across the particular plane. |
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February 14, 2014, 12:18 |
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#4 | |
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Bernhard Gschaider
Join Date: Mar 2009
Posts: 4,225
Rep Power: 51 |
Quote:
So one way to do this (if I understand your problem correctly) would be with a sequence of functionObjects: - generate iso-surface sampled Surface - generate a field with the distance from that surface (but only use the values where alpha>0) - from that field generate another isoSampled-Surface - do your evaluations on that Have a look at Examples/other/angledDuctImplciit. I think that is where I test these plugin-functions
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