Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
the area of influence of mesh 'Size'
Posted 21 giu 2012, 08:17 GMT-4 Fluid & Heat, Computational Fluid Dynamics (CFD), Mesh Version 4.2a 0 Replies
Please login with a confirmed email address before reporting spam
I am simulating the 3D flow over a building. My computational domain contain only one small building at the center of the domain. My domain size is about 11x11x6 of the building height. Concerning the mesh, I first used 'Free Tetrahedral'. At 'Size 1' of the 'Free Tetrahedral', I specified 'Normal'. Then I added 'Size 2' to the 'Free Tetrahedral'. At 'Size 2', I applied 'Physic controlled' and 'Fluid dynamic' and then 'Finer' at all walls of the building. I found that the gird is very dense around the building. However, one unexpected thing happened. There is also one dense-grid zone around the top of the domain right above the building. Meshes looks normal in the region between that zone and the zone that just right top of the building.
So I was wondering what happened. And how can we specify the area of influence of the mesh 'Size'?
Thank you.
Atit
Hello Atit Koonsrisuk
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.