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-   -   Incontinuity appears at the grid interface (http://www.cfd-online.com/Forums/fluent/33553-incontinuity-appears-grid-interface.html)

Ryan April 21, 2004 23:00

Incontinuity appears at the grid interface
 
I use two interface to define a grid interface. The computation result shows that an obvious incontinuity happens for the values at the two side of the grid interface.

what is the cause for this problem? and how to solve it?

Regards.

co2 April 22, 2004 10:29

Re: Incontinuity appears at the grid interface
 
i dont know for sure but may be wall and wall-shadow might help

Ryan April 22, 2004 10:32

Re: Incontinuity appears at the grid interface
 
wall and wall shadow? I am sorry I am not very clear about your meanning. Could you explain it? Thanks.

co2 April 22, 2004 11:23

Re: Incontinuity appears at the grid interface
 
when you create the iterface use splitting tool in gambit --- that should give you a wall and wall shadow pair when you export your geometry in fluent.

for example split a volume using face and you will get a wall and wall shadow pair in fluent -- try it out and you will know

emre April 23, 2004 04:13

Re: Incontinuity appears at the grid interface
 
Hi,

If you have cells of very different sizes at the two sides of the interface, you should expect such discontinuites. Cell sizes may not be equal but cell volume ratios sould not be more than a few times.

Regards

emre


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