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sinulate bubble rising with VOF

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Old   September 23, 2004, 00:54
Default sinulate bubble rising with VOF
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danny
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hi, everyone: Now, I am computing the process of a bubble rising thourh water in a pipe. The diameter and the lenth of the pipe is 10mm and 150mm. the bubble diameter is 8mm. If any one could tell me how many grids should the geometry divided?

Thanks!
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Old   October 1, 2004, 04:56
Default Re: sinulate bubble rising with VOF
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eric
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Hi A best compromise is: mesh length = bubble diameter / 10
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Old   October 1, 2004, 21:37
Default Re: sinulate bubble rising with VOF
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danny
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Hi, Dear Eric, Thank you for your reply first! But how to choose the lenth width ratio? Is it a square? Thank you!

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Old   October 8, 2004, 11:18
Default Re: sinulate bubble rising with VOF
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eric
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I always choose squared meshes. If you want your calculations not to diverge, the mesh has to be as regular as possible. If squared meshes are not possible, try Triangles (same sizes than squared cells) Best regards Eric
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