In SU2 documentation about the numerical schemes (https://su2code.github.io/docs_v7/Convective-Schemes/) FDS is mentioned as a "standalone" method.

Yet, when looking online for more information about FDS scheme, it seems it is just a preconditioning for the ROE scheme. And this seems coherent with the fact that has reported here it is a necessary treatment for the poor convergence of compressible codes (the main cause is the artificial dissipation) for this type of simulations.

Hence my question: are FDS scheme and ROE-FDS scheme the same with FDS being only a treatment to make ROE scheme work well in incompressible cases?


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