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Fine mesh that grows into coarse mesh one domain COMSOL4.2
Posted 12.10.2011, 08:49 GMT-4 Fluid & Heat, Mesh Version 4.2 2 Replies
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Hi,
I have a question concerning the mesh in COMSOL 4.2:
I am rotating a cylindrical solid body with slots in a cylindrical tank filled with liquid (2D laminar fluid flow, stationary). The simulation itself workis fine.
So my question is, is it possible to create a finer mesh inside the slots which grows slowly into a coarser mesh towards the outer boundary (wall of the tank)? So far I am using the mesh generated by COMSOL, but as I heared from some experienced ANSYS users the mesh for fluid flow should be reactangular. I have tried to do it myself. I have reactangular elements now, but as I increase the number of elements at the slot walls I run into non-convergence problems and the mesh still looks very evenly distributed. I am particularly interested in areas in the vicinity of the slots.
Maybe someone had a similar problem and can help me out? So far I have not used COMSOL frequently, but hopefully this will change in the future ;O).
Thanks a lot for your help!
I have a question concerning the mesh in COMSOL 4.2:
I am rotating a cylindrical solid body with slots in a cylindrical tank filled with liquid (2D laminar fluid flow, stationary). The simulation itself workis fine.
So my question is, is it possible to create a finer mesh inside the slots which grows slowly into a coarser mesh towards the outer boundary (wall of the tank)? So far I am using the mesh generated by COMSOL, but as I heared from some experienced ANSYS users the mesh for fluid flow should be reactangular. I have tried to do it myself. I have reactangular elements now, but as I increase the number of elements at the slot walls I run into non-convergence problems and the mesh still looks very evenly distributed. I am particularly interested in areas in the vicinity of the slots.
Maybe someone had a similar problem and can help me out? So far I have not used COMSOL frequently, but hopefully this will change in the future ;O).
Thanks a lot for your help!
2 Replies Last Post 14.10.2011, 06:23 GMT-4
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Posted:
1 decade ago
Hi
check the manual meshing option, if you start by selecting edges, you can add a "Distribution" subnode, there you can define different functions for the distribution, such as exponential, log ... check out all the features, one by one ;) And read through the doc
--
Good luck
Ivar
check the manual meshing option, if you start by selecting edges, you can add a "Distribution" subnode, there you can define different functions for the distribution, such as exponential, log ... check out all the features, one by one ;) And read through the doc
--
Good luck
Ivar
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Posted:
1 decade ago
Hi Ivar,
thanks a lot for the tip. I found some examples in the COMSOL guide about free meshing ect.. So I guess I need to exercise with a simple structure first :O)
Maybe I need to post again if I do not succeed...
Have a nice weekend!
thanks a lot for the tip. I found some examples in the COMSOL guide about free meshing ect.. So I guess I need to exercise with a simple structure first :O)
Maybe I need to post again if I do not succeed...
Have a nice weekend!