moving mesh VS multigrid

moon_light · May 20, 2012, 04:59

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

hadian · May 21, 2012, 02:54

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 · May 31, 2012, 23:12

Quote:

Originally Posted by hadian

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, 04:51

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...

May 20, 2012, 04:59	moving mesh VS multigrid	#1
moon_light New Member Moon Chen Join Date: May 2012 Posts: 7 Rep Power: 13	Hi guys! What is the difference between moving mesh and multigrid? Thanks!

June 4, 2012, 04:51	udf for relief valve	#4
m.hossein New Member mohammad hossein Join Date: Jun 2012 Posts: 1 Rep Power: 0	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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May 21, 2012, 02:54		#2
hadian Member Mohammad Reza Hadian Join Date: Mar 2009 Location: Yazd, Iran Posts: 52 Rep Power: 17	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.