Rob
Ansys Employee
The reference pressure is used for pressure coefficient calculations, so doesn't matter here. I'd also suggest checking how each heat transfer coefficient is calculated in Fluent as we have 3-4 of them. My usual approach is to use the heat flux, and area from Fluent and then pick the temperatures that make sense to you as you would in an experiment and use Excel/calculator/piece of paper to find the HTC. nThe only other thing to watch is gravity and operating density to prevent the water moving due to height effects. Look at section 7.3.1.5 and I'd suggest making sure that rho_0 (operating density) is exactly the same as rho_s. nRe the turbulence, RNG ke with buoyancy terms on is recommended if it's turbulent. I'd also extend the profile to be larger than the temperature range you're modelling. n