i want calculate heat transfer coefficient for a flow in a pipe. this flow has a Re=6000(reynolds number)
Dear Ali, look at this link, it include the empirical correlation for Levenspiel (1998) to calculate nusselt number in transition flow regime. Regards
http://facstaff.cbu.edu/rprice/lectures/htcoeff.html
Dear Mohammed saad Kamel, thanks for your guide. My model include a rod and a flow tube that the rod is inside of the flow tube. For cooling the rod, we use the circling water around the rod. I want to calculate the heat transfer coefficient of coolant in (W . m -2. K-1)unit
Dear ALI, you can calculate heat transfer coefficient from nusselt number if you calculater hydraulic diameter for your concentric annuli (Dh=Dout-Din) in your case. there are several correlation to calculate nusselt or h in transition flow inside concentric annuli channel. My regards
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