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-   -   UDF to apply source to a group of cells (https://www.cfd-online.com/Forums/fluent/29500-udf-apply-source-group-cells.html)

Hiranya Nath March 14, 2002 01:49

UDF to apply source to a group of cells
 
Hi!

I know that some coordinate locations can be specified that will bound a certain region of cells for applying source terms to them. But is there any other way, such as giving a name to a group of cells and then accessing those cell info in UDF in order to apply the source terms. I would appreciate if any body can help me in providing a solution for this.

Thanking you, Hiranya


laika March 14, 2002 04:46

Re: UDF to apply source to a group of cells
 
yes, it's possible:

in adapt, mark your region of cells. Fluent will create a register with the cells you marked.

Go to grid - separate, select the option for registers, select your register and select a zone from wich your group of cells should be separated. OK Fluent will create a new zone. In the setting for the boundary conditions, you can rename the zone and apply your UDF.

I hope this helps,

Laika, still orbiting

Hiranya Nath March 14, 2002 09:49

Re: UDF to apply source to a group of cells
 
Hi Laika,

Nice to know that u r still orbiting! Thank you very much for the suggestion. Well, I have tried to separate a small zone and gave it a name. But it comes as an Interior zone, and I can not hook an UDF to this zone. Would you please suggest a work around for this?

Thanks, Hiranya

Laika March 15, 2002 04:52

Re: UDF to apply source to a group of cells
 
What exactly have you done?

I just tried it, and I could separate easily a fluid zone. I can now apply every source-udf I want. Are you sure you had a register of cells? (use adapt-isovalue-grid)

Laika, still orbiting

Hiranya Nath March 15, 2002 06:01

Re: UDF to apply source to a group of cells
 
oh! I am sorry, I was in some confusion, I could do it. Yeah, thanks a lot.

keep orbiting -:)),

Hiranya


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