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cfx solvers -FVM?

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Old   February 5, 2003, 13:54
Default cfx solvers -FVM?
  #1
derrek
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Is cfx all FVM based?
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Old   February 5, 2003, 17:53
Default Re: cfx solvers -FVM?
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Robin
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Yes. CFX uses an element based Finite Volume Method.

-Robin
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Old   February 6, 2003, 07:58
Default Re: cfx solvers -FVM?
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derrek
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The PI sheet for cfx5 states the following "Conservative finite-element based control volume method"

This implies FVM?
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Old   February 7, 2003, 19:19
Default Re: cfx solvers -FVM?
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Sharks
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Hi Derrek

CFX-5 uses an unstructured Finite Element based Finite Volume method. The FE basis comes from the use of shape functions, common in FE techniques, to describe the way a variable changes across each element. It is also a node based code, where the solution variables are solved and stored at the centers of the finite volumes, or the vertices of the mesh.

I believe TASCflow employs a similar strategy, except that it can solve on only block-structured hexagonal meshes.

CFX-4 uses a cell-centered Finite Volume/Finite Difference method.

Sharks
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Old   February 9, 2003, 08:50
Default Re: cfx solvers -FVM?
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derrek
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sharks, thanks for the info.

I am not that familiar with the FVM. Still not sure where the finite volume comes into play in regards to cfx4. If it is an unstructured mesh using shape functions, how does it differ from a true FE based solver?

cheers, derrek
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Old   February 10, 2003, 12:50
Default Re: cfx solvers -FVM?
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Robin
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Hi Derrek,

A control volume is analagous to the finite volume.

Six of one, half a dozen of another.

Regards, Robin
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