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Different boundary heat source values when using ray optics and ray heating
Posted Mar 4, 2022, 1:08 p.m. EST Ray Optics, Heat Transfer & Phase Change, Studies & Solvers Version 5.6 0 Replies
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Hi all
I am developing a model with a photovoltaic cell under high concentrations using a fresnel lens. I have noticed that the result for the boundary heat source over the surface of the reciever is different when using a bidirectionally coupled ray tracing study with heat transfer, and when using a ray tracing study. giving 0.45 W/mm^2 and 0.38 W/mm^2 peaks respectively. also, the bidirectionally coupled ray tracing study gives a heat flux distribution that is more grainy which would normally suggest the mesh is different, when it is the same for both. this is despite both evaluating the expression gop.wall1.bsrc1.Qp which to my understanding is dependent on the ray optics physics only. everything else in the model is the same, the two study steps are on the same .mph file.
Why are these values different? how can i tell which one is accurate? why is the distribution changing?
Any help would be greatly appreciated!
Hello William Cameron
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