k-e turbulence model and heat transfert (Comsol)
 

Hi everyone

I tried to model a turbulent flow for a water to water heat exchanger. I expected the temperature inside my pipe to be kind of constant along the same "z". Instead of that I obtained a temperature profile similar to the previous obtained with the laminar navier Stokes equations (i.e. without vorticity).

How could I obtain a better mix in my pipe? did someone manage to do this?