Forced convection heat transfer around a constant surface heat flux horizontal cylinder with baffles. Reynolds number re<40 case

Résumé

This paper presents the heat transfer management around a horizontal circular cylinder that has a constant surface heat flux using uniformly distributed baffles.
The dimensionless boundary conditions are solved in the computational domain using the finite differences methods, in a hybrid scheme, and the results are
emphasizing the Nusselt number variation as a function of Reynolds number, number of baffles and baffle height. The analysis shows that for a constant surface heat flux horizontal cylinder and for a Reynolds number less than 40, a reduction as high as 52% can be obtained using uniformly distributed baffles. For small values of baffle height, an increase of the Nusselt number is registered and it becomes more pronounced as the Reynolds number decreases and the number of baffles increases.