changing variables in any iteration using udfs

August 10, 2006, 04:05

Hi all;

I want to change some scalar variables ;for example; temperature , vof ,... in end of any iteration based on the my algorithm using udfs. is it feasible? If your answer is yes , please give me a udf example for this porpuse and help me.

Best regards.

August 11, 2006, 03:13

For example,Can we use following udf for changing temperature and vof on some cells?

Define_adjust {

bigin_c_loop

{

/...stuff.../

C_VOF(c,t0)=/..stuff.../

C_T(c,t)=/...stuff.../

}

end_c_loop

}

Please give me a suggestion .

Thanx in advance. -Asghari-

August 11, 2006, 10:06

I don't think it possbile to set scalar values in this way. You can do it by using a correctly linearised source term. See Numerical Fluid Flow and Heat Transfer by Patankar or www.cfd-online.com/Wiki/Source_term_linearization

August 10, 2006, 04:05	changing variables in any iteration using udfs	#1
Asghari Guest Posts: n/a	Hi all; I want to change some scalar variables ;for example; temperature , vof ,... in end of any iteration based on the my algorithm using udfs. is it feasible? If your answer is yes , please give me a udf example for this porpuse and help me. Best regards.

August 11, 2006, 03:13	Re: changing variables in any iteration using udfs	#2
Asghari Guest Posts: n/a	For example,Can we use following udf for changing temperature and vof on some cells? Define_adjust { bigin_c_loop { /...stuff.../ C_VOF(c,t0)=/..stuff.../ C_T(c,t)=/...stuff.../ } end_c_loop } Please give me a suggestion . Thanx in advance. -Asghari-

August 11, 2006, 10:06	Re: changing variables in any iteration using udfs	#3
cadaei Guest Posts: n/a	I don't think it possbile to set scalar values in this way. You can do it by using a correctly linearised source term. See Numerical Fluid Flow and Heat Transfer by Patankar or www.cfd-online.com/Wiki/Source_term_linearization

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