[imam_mustafa]

Hello Everyone

I am a beginner of Ansys Fluent, working on Concentrated Solar Power

My model comprises an array of reflectors focusing solar radiation onto an Absorber Tube. Inside the tube is a working fluid which is expected to be heated by the Heat Flux impinging on the surface of the Absorber Tube.

I want to use Fluent to determine the flow, heat transfer and heating of Heat Transfer Fluid. However, my Heat Flux varies with time, 7am to 7pm.

Please can anyone guide me on how to develop a UDF code for a time-dependent Heat Flux

Thank you

Below is time-dependent Heat Flux (W/m-2)
7 806
8 891
9 957
10 968
11 969
12 963
13 936
14 875
15 794
16 695
17 519
18 14
19 0

[AlexanderZ]

for your simple case you may use this approach:
https://www.youtube.com/watch?v=s_YkmvFH8VQ

best regards