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leung June 18, 2004 08:52

Mesh
 
Hi all,

i am a new cfd user, i want to know is there any "rule of thumb" for fine grid generation. Sometimes i do not know how fine should i do for the mesh/grid in order to give gd accuracy.

Can anyone give me some advice?

Thank all

Podila K June 19, 2004 08:34

Re: Mesh
 
Okie there is grid independence condition. The fineness of the grid depends on hit and trial attempts in the sense for instance u have carried the simualtions for say 100 cells but if u do the same set of clacualtions for 200 cells then u will see a change in ur solution since it might hae not yet been gird indpendent. so u have to keep doing till u see that even if u change the grig 10000 u get the same solution. In practical situations to do so u must have good computational capbilities and at the same time in mutliphase flows it is difficult to attain. I hope it helps! Podila


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