On the linear heat transfer correlation of a heated circular cylinder in laminar crossflow using a new representative temperature concept

Determination of the reference temperature for the kinematic viscosity of R eynolds number is the key problem for describing the forced convection of a heated bluff-body. The heat transfer of a heated circular cylinder in lami nar cross airflow is experimentally investigated in this paper. New correla tion equations based on the effective temperature have been firstly derived . All experimental data collapsed excellently on the correlation curves. Mo reover, the derived Nusselt and Reynolds number relations are independent o f the vortex shedding patterns. The correlation equations have further been transformed to an explicit form without temperature ratio. By introducing a newly proposed representative Reynolds number concept, linear correlation equations have been successfully derived. (C) 2001 Elsevier Science Ltd. A ll rights reserved.