CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   Main CFD Forum (http://www.cfd-online.com/Forums/main/)
-   -   about the convection heat transfer coefficient for air conditioning room simuation (http://www.cfd-online.com/Forums/main/106316-about-convection-heat-transfer-coefficient-air-conditioning-room-simuation.html)

haier1984 August 24, 2012 23:00

about the convection heat transfer coefficient for air conditioning room simuation
 
I am simulating the air conditioning room. As for the wall boundary condition, I use the interior wall temperature and convection heat transfer coefficient h (or wall function). For the convection heat transfer coefficient h (or wall function), Normally, there are following choices:
(1) h=(k/x)*0.0296Re^0.8*Pr^(1/3) which comes from the plate theory;
(2) based on the experiment,hadj,cell=[ hMACA*(Tsurface-Treference)]/( Tsurface-Tadj,cell) in which, hMACA is the algorithm calculates convection coefficients for all surfaces based on surface temperature and the appropriate reference temperatures.
(3) wall function

So I want to know which choice is better for the air conditioning room simulation?


All times are GMT -4. The time now is 20:17.