Heat transfer coefficient
Hi
I'm trying to calculate the heat transfer coefficient from my CFDSimulation. Can anybody tell me which formula I've to implement? I tried using the formula from OpenFoam's application wallHeatFlux, i.e. alphaEff*cp = alphat*cp+lambda divided by the height of the first cell normal to the surface. The units are matching (W/(m^2K)), but my results are way to high. Can anybody tell me where I can find theoretical results/formulas/literature for this topic? Thanks a lot Daniela 
what are you trying to simulate, and where are you trying to find the convective heat transfer coefficient?

Hi
I'm using a simple 2D cylinder case to test my calculation of the heat transfer coefficient. Later it will be a cabin flow problem. The coefficient will be used to calibrate 1D simulations. Daniela 
so, your hand calc is not matching your CFD result? And, it is a cylinder in cross flow?

I wouldn't expect an exact match, but handcalc gives 14 and my program gives 626. The difference is certainly to high.There is flow around the cylinder which was considered for the handcalc.

All times are GMT 4. The time now is 11:36. 