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May 3, 2018, 19:37 |
Calculate Nusselt number
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#1 |
Senior Member
Joe
Join Date: Feb 2012
Location: Canada
Posts: 111
Rep Power: 14 |
Hello everyone,
I would like to calculate the Nusselt and heat transfer coefficient in my domain. I use "Reports" and then "area-weighted average", wall fluxes and surface Nusselt number on the walls that I would like to investigate. The question is about the reference value for Temperature. As I change this value, I get different NU or h values. what is the right way to choose the reference value? I used Boussinesq and the applied BCs are a constant temperature value of 310 and 320 K. I read the FLUENT tutorial and was expecting that NU is calculate based on the wall temperature and the temp near the wall. If that's the case, the reference temperature should not change the results. What am I missing?! Thank you in advance! |
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