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Old   August 22, 2001, 03:03
Default Variable mesh for NASA-VOF3D
Kong Kok Haw
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Dear sir,

Hi, I have a question. The NASA-VOF3D program is able to simulate variable mesh size. But is it possible to vary the size at z-coordinate, such that the top and bottom face has different length? where it is actually to bend the cylinder tube into an elbow. TQ for your consideration.

Regards, Kok Haw
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Old   August 22, 2001, 15:04
Default Re: Variable mesh for NASA-VOF3D
Jim Park
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The code works strictly with brick shaped control volumes. Strictly orthogonal.

You might be able to set up the region you describe using the FAVOR (fractional area volume obstacle representation) feature of NASA-VOF3D.

This freature allows blocking all or part of selected groups of control volumes to flow, creating smooth curved boundaries within the mesh. The fluid motion is followed (including any free surfaces via VOF) within the unblocked cells.

Do a search within cfd-online for more information on FAVOR.
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Old   August 24, 2001, 01:48
Default Re: Variable mesh for NASA-VOF3D
Kong Kok Haw
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Thanks, Jim. Can anyone please provide me more information on FAVOR. TQ.
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Old   August 24, 2001, 10:31
Default Re: Variable mesh for NASA-VOF3D
Jim Park
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Sorry I've gotten lazy!

Look at

Sicilian, J. M. & Hirt, C. W., "An Efficient Computational Scheme for Tracking Contaminant Concentrations in Fluid Flows," JCP, v. 56, pp. 428-447, 1984.

There's also a short appendix on the subject in

Martin D. Torrey, Lawrence D. Cloutman, Raymond C. Mjolness, & C. W. Hirt, "NASA-VOF2D: A Computer Program for Incompressible Flows with Free Surfaces," LA-10612-MS, Los Alamos, NM, 1985.

This references other Los Alamos reports.
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Old   July 31, 2010, 08:05
Default Vof 3d
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abbas dashti manesh
Join Date: Jul 2010
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shipgod63 is on a distinguished road

would you please send me NASA VOF 3D report?

Best regards,
shipgod63 is offline   Reply With Quote


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