# transient solid condution

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 December 3, 2003, 19:38 transient solid condution #1 Bikash Guest   Posts: n/a Hi, im using Fluent6. i want to input the source term which is varying with time. just the source term, the boundary conditions are not changing. i have the datas of how the source term is changing with time. how do i input the source term? it would be a great help if anyone would lead me the way. regards bikash

 December 4, 2003, 05:54 Re: transient solid condution #2 Andrew Garrard Guest   Posts: n/a I believe the only way that you can achieve this is with a UDF. If that is the case and you have not created a UDF before then you are faced with a decision of either finding someone who will make one for you, possiable for a fee, or learning UDF programming and doing it yourself. Check out the UDF manual for Fluent 6.

 December 4, 2003, 11:20 Re: transient solid condution #3 bikash Guest   Posts: n/a hi andrew thanks a lot for ur advice. let me try the UDF, hope i can do something. thank you bikash

 December 4, 2003, 23:16 Re: transient solid condution #4 co2 Guest   Posts: n/a bikash, take a look at the following udf for varying temperature at a boundary. your udf will look similar but it will act on the source term. /************************************************** ********************/ /* unsteady.c */ /* UDF for specifying a transient velocity profile boundary condition */ /************************************************** ********************/ #include "udf.h" DEFINE_PROFILE(unsteady_temp, thread, position) { face_t f; begin_f_loop(f, thread) { real t = RP_Get_Real("flow-time"); F_PROFILE(f, thread, position) = 350. + 5.0*t; } end_f_loop(f, thread) }

 December 5, 2003, 11:33 Re: transient solid condution #5 bikash Guest   Posts: n/a hi thanks a lot for ur help. regards bikash

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