Calculating volume of 3D object from its co-ordinates
Dear Friends,
I am working on geometric reconstruction method for volume of fluid method. It is a 3D code. For this i need to evaluate the volume created by intersection of a cell (cube or cuboid) and a plane (may not be aligned with cell faces). I can calculate all the points of the geometry created by the intersection and store in (x,y,z) array but I do not know how to evaluate the volume of the entity. It would be great help if you can suggest me of any existing idea or literature. Sincerely, Purushotam |
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The volume of any volume in3D can be calculated with Gauss theorem.
int(divergence(xi))dV=int(xc*Sx)dS=sigma (xc*Sx) that means the volume can be calcualted as the sum of (face center x coordinate multiply the surface vector x component) hope this help you. |
Once you have all the points of the surface you can triangulate it and use the following (already discussed by someone above):
http://www.public.iastate.edu/~zjw/p...1999-AIAAJ.pdf In general, however, you should check some VOF literature to know if there are some specific issues to consider when applying this with VOF. |
hi, do you know how to creat a geometry and could change the length in different conditions.
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Guys
It is much more simpler It is the scaler tripple product of your linear algebra text book Good Luck |
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