# Forced Convective Heat Transfer for moving cylinde

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 October 11, 2005, 06:32 Forced Convective Heat Transfer for moving cylinde #1 Guest Guest   Posts: n/a I am interested in estimating the convection heat transfer coefficient of a cylinder moving in water. The length of the cynlinder can be taken as L and diameter as D and L/D ~ 2. The cylinder speed may be taken as 15 m/s. I would be grateful if someone could suggest me an empirical technique/ formulae with theory for estimating the same. thanx in advance

 October 11, 2005, 06:44 Re: Forced Convective Heat Transfer for moving cyl #2 diaw Guest   Posts: n/a >>>I am interested in estimating the convection heat transfer coefficient of a cylinder moving in water. The length of the cynlinder can be taken as L and diameter as D and L/D ~ 2. The cylinder speed may be taken as 15 m/s. Set up a simple model with fixed cylinder & moving water (relativitity). You can tackle the heat input in 2 ways: 1. Macro - measure overall water temperature diffeence up & downstream & compute the heat-transfer. Work backwards to calculate the average heat-transfer coefficient. 2. Surface - from the solution, compute the surface temperature gradient & then onto the local & average surface heat-transfer coefficient. Some packages will even allow the user to collect the surface fluxes. >>>I would be grateful if someone could suggest me an empirical technique/ formulae with theory for estimating the same. These can be found in almost any standard college theat-transfer textbook. "Fundamentals of Heat & Mass Transfer", Incropera & Dewitt, is a good one. Bejan has a few good books. diaw...

 October 11, 2005, 14:36 Re: Forced Convective Heat Transfer for moving cyl #3 Ahmed Guest   Posts: n/a Free is always better http://web.mit.edu/lienhard/www/ahtt.html

 October 11, 2005, 14:43 Re: Forced Convective Heat Transfer for moving cyl #4 Ahmed Guest   Posts: n/a

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