Moving surface (with swak4Foam perhaps?)
Does anybody know if I can have a moving surface (maybe using swak). Something like :
basePoint (0 $expression 0);
normalVector (0 1 0);
what do you intend exactly? do you want to obtain averages on a moving wall? how it moves?
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.
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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