Some doubts about my mesh

July 10, 2007, 00:16

Hi! Everyone, When I make boundary layer mesh I will have large aspect ratio and high expansion factor. That will turn out two exclamation marks when I start the solver. Is that OK to just let CFX to run like that or there is another way? Thanks

July 10, 2007, 01:20

Hi,

the warning with regards to the aspect ratio should vanish, while using the double precision option. However, the expansion factor warning will persist. You should try to modify the node distribution in order to avoid that. Otherwise you might have convergence problems.

Mic

July 10, 2007, 07:27

Hi! Mic, Thank you very much. But where can I select the double precision ?

July 10, 2007, 13:16

Hi Jack,

you can select the double precision option in the solver manager. Click on the advanced option tab. There you will find a check box for the option.

By Mic

July 10, 2007, 00:16	Some doubts about my mesh	#1
Jack Guest Posts: n/a	Hi! Everyone, When I make boundary layer mesh I will have large aspect ratio and high expansion factor. That will turn out two exclamation marks when I start the solver. Is that OK to just let CFX to run like that or there is another way? Thanks

July 10, 2007, 01:20	Re: Some doubts about my mesh	#2
mic Guest Posts: n/a	Hi, the warning with regards to the aspect ratio should vanish, while using the double precision option. However, the expansion factor warning will persist. You should try to modify the node distribution in order to avoid that. Otherwise you might have convergence problems. Mic

July 10, 2007, 07:27	Re: Some doubts about my mesh	#3
Jack Guest Posts: n/a	Hi! Mic, Thank you very much. But where can I select the double precision ?

July 10, 2007, 13:16	Re: Some doubts about my mesh	#4
mic Guest Posts: n/a	Hi Jack, you can select the double precision option in the solver manager. Click on the advanced option tab. There you will find a check box for the option. By Mic

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