Usually these are internal companies knowledge: I just could suggest you that API codes or ASME codes could give some guidelines, and at the end verify the structural robustness of that with that codes.
For flud dynamics analysis there are some basic knowledge that you can find on internet or in some academic manual: there are some coefficient based on some experimental test to consider to decide the kind of flux based on the fluid data. Anyway often are used CFD software, 1D as flowmaster or 3D as CFX (or Fluent, but in this case is better CFX) to verify fluid dynamic functioning.