i had an idea to calculate fluids, that might be of interest.
I guess its quite astonishing, but I would use my model based on general
relativity. The advantage would be to have only dimensionless numbers
and no need to care for temperatur, velocity, friction or viscosity. Its
based on the calculation of energy flow. The calculation is done by a
certain simulation and the matter flow regained by a sytem that is call
CDA or curvilinear distance analysis.
Thomas Heger