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moving mesh VS multigrid

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Old   May 20, 2012, 04:59
Default moving mesh VS multigrid
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Moon Chen
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Hi guys!
What is the difference between moving mesh and multigrid? Thanks!
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Old   May 21, 2012, 02:54
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Mohammad Reza Hadian
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moving mesh uses non-fixed mesh that can be because of moving boundaries or adaptive mesh. multigrid uses different meshes on a same domain with different sizes and the solver moves between them. it causes the errors to distribute faster and results in a faster convergence.
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Old   May 31, 2012, 23:12
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Moon Chen
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Quote:
Originally Posted by hadian View Post
moving mesh uses non-fixed mesh that can be because of moving boundaries or adaptive mesh. multigrid uses different meshes on a same domain with different sizes and the solver moves between them. it causes the errors to distribute faster and results in a faster convergence.
Thank you! I understand. For a long time, I am confused by the conceptions: multigrid meshes, adaptive mesh and moving mesh.
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Old   June 4, 2012, 04:51
Default udf for relief valve
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mohammad hossein
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hi guys
i am a new master student and have a project about analyzing a relief valve... as i am mediocre in fluent , i need an example udf code for moving object in fluid field... i need to model the spring effects as well.
i 'll be thankful if someone share an example code that i can be familiar with...
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