[mikemech]

Hello.

I am trying to calculate the flow inside a heat exchanger, and I am using the "BuoyantSimpleFoam" solver. This solver assumes air and its corresponding thermophysical properties. The thing is, I want to have water instead, so I tried to change the values of thermophysical properties and transport properties so as to simulate "water". So, the original thermophysical properties file was this:

thermoType hPsiThermo<pureMixture<constTransport<specieThermo <hConstThermo<perfectGas>>>>>;
mixture air 1 28.96 1004.4 0 1.831e-05 0.703;

And I modified it so it looks like this:
thermoType hPsiThermo<pureMixture<constTransport<specieThermo <hConstThermo<perfectGas>>>>>;
mixture air 1 18 4213 0 298e-06 1.96;


As you can see, I just substituted Molecular Weight, Cp, latent heat of fusion and Prandtl Number with the values that correspond to water in 95 degrees Centigrade. I also substituted nu in transportProperties file with the value 0,29e-06.

My question is, if all these modifications are enough so as to run a peudo-water flow with BuoyantSimpleFoam solver ? Or I do I need to change other parameters as well?

Thanks in advance