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Bubble rising, specification of the interface |
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March 5, 2014, 20:29 |
Bubble rising, specification of the interface
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#1 |
Member
Join Date: Feb 2014
Posts: 34
Rep Power: 12 |
Hi All,
I just started using OpenFoam and now I'm trying to do a bubble rising problem. Since I'm new, I could have make some seriously stupid mistakes. So I'll be grateful if you can guide me to the right direction. So I used interDyMFoam. (because I may need to add a solid object later to see the deformation of the bubble.) I think the right place to specify the initial shape of the bubble is in system/setFieldsDict, by defining a 'box' in boxToCell. My first question is, is it possible to give a circular shape to the interface? What I'm doing now is box (0.4 0.4 -1.0) (0.5 0.5 1.0) which gives me a rectangle initial shape. Second question, if I want to add a fixed(or maybe free falling) solid object to the fluid domain, so that when the bubble rises it deforms due to the presence of the solid, where should I specify the position and shape of the object. Should I add that in the boundary conditions? How about mesh refinement? I am using 'dynamicMeshDict', does it also work with presence of solid object? Thanks for any piece of advice! Best, |
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March 6, 2014, 03:56 |
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#2 |
Senior Member
Yogesh Bapat
Join Date: Oct 2010
Posts: 102
Rep Power: 15 |
Hello ,
You can use sphereToCell to patch bubble. Also for fixed solid wall you can keep it as wall inside the domain. -Yogesh |
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March 6, 2014, 11:38 |
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#3 |
Member
Join Date: Feb 2014
Posts: 34
Rep Power: 12 |
Yogesh,
Thanks for your reply! I am using cylinderToCell in my 2D case and it seems to be working. I'm sure I'll need sphereToCell in a 3D case. So if I have a fixed solid wall, do I need to manually divide the single domain into hexagons? Do I need to treat the fixed solid as a hole in the domain? What if I have a solid with complicated shapes like a star? Can I just insert some solid into the domain instead of treating it as a hole? Best, |
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March 11, 2014, 11:05 |
From Salome Preprocessor to OpenFoam
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#4 |
Member
Anil Kunwar
Join Date: Jun 2013
Posts: 64
Rep Power: 11 |
Hi,
How can we draw a geometry in Salome and export it to OpenFOAM? Yours Anil Kunwar |
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