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Volume 03 Issue 02
   Volume & Issue: Volume 03 Issue 02



Numerical Investigation of Heat Transfer of Flow Over the Cylinder with High Conductivity Fins

  Volume 03,Issue 02

 

Author :

Ali Sari, Hossein Fatahian, Esmaeel Fatahian

 

Abstract :

The laminar forced convection across a heated cylinder is an important problem in heat transfer. In this study, the problem of forced convective heat transfer of flow over horizontal cylinder with equally spaced fins with high conductivity has been numerically investigated on the outer surface. The effect of the number of fins and their height on the average Nusselt number was investigated for Reynolds numbers within the domain 5-2000. The effect of the fins on the forced convective heat transfer over isothermal horizontal cylinder was studied for numerous combinations of fins (F=0-14), the height of fins (H=0.5-3) and different Reynolds number values (ReD = 5-2000). Changing the average Nusselt number for a given value of Reynolds number due to the increased number of fins, the average Nusselt number at the same Reynolds number was normalized by the Nusselt number of finless cylinder and it was conducted because of the focus on the relatively effect of the increased fins. The results showed that there is an optimum number of fins to obtain the maximum Nusselt number for a given value of fins height and Reynolds number. Furthermore, the short fins decrease the Nusselt number at low Reynolds number.

 

Keywords :

Forced convective heat transfer, Cylinder fins, Nusselt number, Reynolds number.

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