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May 25, 2013, 12:32 |
problem with UDF
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#1 |
New Member
neda rahimi
Join Date: May 2013
Posts: 13
Rep Power: 13 |
Hi,
I solved a UDS for voltage. Now I am trying to obtain the derivative of voltage by writing this UDF: # include "udf.h" # define domain_ID 1 DEFINE_ON_DEMAND(store_gradient) { Domain *domain; cell_t c; Thread *t; domain=Get_Domain(1); thread_loop_c (t,domain) { begin_c_loop (c,t) { C_UDMI(c,t,0) = NV_MAG(C_UDSI_G(c,t,0)); } end_c_loop (c,t) } } It compiled successfully, but when I display the contour of UDM, in all the domain it has magnitude zero!!! What's the wrong Thank you for advising me. |
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May 26, 2013, 02:01 |
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#2 |
Member
Shashank
Join Date: Apr 2011
Posts: 74
Rep Power: 15 |
What is the UDS equation you are solving?
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May 26, 2013, 07:28 |
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#3 |
New Member
arough
Join Date: Mar 2013
Location: tunisia
Posts: 24
Rep Power: 13 |
Hello,I have a problem with UDF
in fluent a message appear: Error: FLUENT received fatal signal (ACCESS_VIOLATION) 1. Note exact events leading to error. 2. Save case/data under new name. 3. Exit program and restart to continue. 4. Report error to your distributor. Error Object: () can any one help me |
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May 26, 2013, 12:56 |
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#4 |
Member
Shashank
Join Date: Apr 2011
Posts: 74
Rep Power: 15 |
Post your UDF here and folks will take a look.
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May 27, 2013, 10:39 |
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#5 |
New Member
neda rahimi
Join Date: May 2013
Posts: 13
Rep Power: 13 |
hi;
thank you for your attention. but i solved my problems. dear rou after compiling your UDF you must press enter in fluent page then type solve/set/expert and press enter. you must type yes in front of the second text "keep temporary solver memory from being freed?". after it you can execute on demand. good luck. |
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May 29, 2013, 06:36 |
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#6 |
New Member
arough
Join Date: Mar 2013
Location: tunisia
Posts: 24
Rep Power: 13 |
hi,
thank you for your help nikiii but when I initialize the program it write no UDF I don't know what's the problem? |
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Tags |
derivative, udf, udm, uds |
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