UDF for Non-Uniform Heat Flux around Circular Tube.

usamaa908 · October 26, 2019, 14:50

I am currently doing a research on Parabolic Trough Collector and need a UDF to define non uniform heat flux as a boundary condition. I have an equation of heat flux in terms of Theta (circumferential angle), but don't know how to define this equation in C language since I have no experience with C language, kindly help. thanks.

AlexanderZ · October 28, 2019, 01:55

ansys fluent customization manual
look for DEFINE_PROFILE macro

dhiraj kumar · February 22, 2022, 02:35

hello everyone. I have a solar receiver in which at outer surface of the receiver i have to apply non-uniform heat flux [cosine profile - q(θ) = qnet ·
cos θ(−90 ≤ θ ≤ 90)] with radiation and convection losses to ambient. can anyone give me the idea for writing the UDF for ansys fluent for this condition. thanks !

October 26, 2019, 14:50	UDF for Non-Uniform Heat Flux around Circular Tube.	#1
usamaa908 New Member Osama Malik Join Date: Oct 2019 Posts: 8 Rep Power: 6	I am currently doing a research on Parabolic Trough Collector and need a UDF to define non uniform heat flux as a boundary condition. I have an equation of heat flux in terms of Theta (circumferential angle), but don't know how to define this equation in C language since I have no experience with C language, kindly help. thanks.

October 28, 2019, 01:55		#2
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	ansys fluent customization manual look for DEFINE_PROFILE macro __________________ best regards ****************************** press LIKE if this message was helpful

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February 22, 2022, 02:35		#3
dhiraj kumar New Member dhiraj Join Date: Nov 2021 Posts: 6 Rep Power: 4	hello everyone. I have a solar receiver in which at outer surface of the receiver i have to apply non-uniform heat flux [cosine profile - q(θ) = qnet · cos θ(−90 ≤ θ ≤ 90)] with radiation and convection losses to ambient. can anyone give me the idea for writing the UDF for ansys fluent for this condition. thanks !