Writing a UDF for Source Terms

ArvSun · November 10, 2017, 15:14

Hi, I am simulating a transient scenario for a data center. I have given the racks as a heat source i.e In cell zone I have given source term and specified a energy source of 500W/m3. I want to give it as a sin function where the Q varies with time. i.e at t=0 I want heat source to be 0, then at t=10, heat source to be 500W/m3.. I am not sure how to write a UDF for this specific case.

Also, is there any other way to incorporate this in FLUENT. ?

Thank you very much

kmd · October 19, 2018, 14:24

Did you find how to do that?
I have problem in modelling air flow in server , how you did that? please reply

blackmask · October 21, 2018, 00:43

Please check the UDF manual on the usage of macros

Code:

DEFINE_SOURCE, CURRENT_TIME

kmd · October 21, 2018, 03:24

How to specify air flow in racks?

November 10, 2017, 15:14	Writing a UDF for Source Terms	#1
ArvSun New Member Arvindh Sunder Join Date: Nov 2017 Posts: 1 Rep Power: 0	Hi, I am simulating a transient scenario for a data center. I have given the racks as a heat source i.e In cell zone I have given source term and specified a energy source of 500W/m3. I want to give it as a sin function where the Q varies with time. i.e at t=0 I want heat source to be 0, then at t=10, heat source to be 500W/m3.. I am not sure how to write a UDF for this specific case. Also, is there any other way to incorporate this in FLUENT. ? Thank you very much

October 21, 2018, 00:43		#3
blackmask Senior Member Join Date: Aug 2011 Posts: 421 Blog Entries: 1 Rep Power: 22	Please check the UDF manual on the usage of macros Code: DEFINE_SOURCE, CURRENT_TIME

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October 19, 2018, 14:24		#2
kmd New Member Dayananda KM Join Date: Apr 2018 Posts: 8 Rep Power: 8	Did you find how to do that? I have problem in modelling air flow in server , how you did that? please reply

October 21, 2018, 03:24		#4
kmd New Member Dayananda KM Join Date: Apr 2018 Posts: 8 Rep Power: 8	How to specify air flow in racks?