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Old   November 2, 2023, 10:19
Default Heat Source Term
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I'm trying to add a time varying and spatially varying heat source to my simulation, but I am a bit unsure how to compute the energy residual. My source term is in W/m^3. Can I add this directly to the energy residual? I looked at other source term residuals and they all seem to multiply by the control volume and I don't quite understand why.
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Old   November 2, 2023, 12:16
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The PDE is solved using a Finite Volume Method, where you integrate the PDE over a control volume. This is why the source term is multiplied by the volume, see e.g. equation (27) :

https://su2code.github.io/documents/AIAA-2018-3111.pdf
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Old   November 2, 2023, 13:39
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Thanks for the reply. I've implemented the source term in the files:


CConfig.hpp
CConfig.cpp
CDriver.cpp
flow_sources.hpp
flow_sources.cpp
CEulerSolver.cpp


Are there any other files I need to make changes to?


Also, for the energy equation, would the residual simply be:
residual[nDim+1] = -Volume * Source
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