Local heat transfer coefficient around a cylinder
I'm trying to get the local Nusselt number around one cylinder in an external air flow.
The mesh is fine enough to have y+~1 near the wall.
I got the total temperature near the wall, the heat flux near the wall (W/mē) and the total heat flux exchanged (W)
To calculate the local heat transfer coefficient, I tried two methods :
h1 = [ heat flux near the wall (W/mē) ] / (383-263)
h2 = [ total heat flux exchanged (W) ] / (383-total temperature near the wall)
Values are completely different!
I wonder what would be the best formula to use?
Thanks in advance!
You have to use static temperature in your calculation not the total temperature.
i have the same problem!
but i have a problem in calculating the local heat transfer around the cylinder!
should i choose some points by surface-point-coordinate?i think cartesian coordinate isn't accurate! plz help me!
thanks in advance!
|All times are GMT -4. The time now is 21:53.|