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-   -   moving mesh VS multigrid (https://www.cfd-online.com/Forums/main/102015-moving-mesh-vs-multigrid.html)

moon_light May 20, 2012 05:59

moving mesh VS multigrid
 
Hi guys!
What is the difference between moving mesh and multigrid? Thanks!

hadian May 21, 2012 03:54

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.

moon_light June 1, 2012 00:12

Quote:

Originally Posted by hadian (Post 362115)
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.

m.hossein June 4, 2012 05:51

udf for relief valve
 
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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