Abstract
In this paper, a numerical study on the two-dimensional laminar mixed convective flow and heat transfer from an rotating circular horizontal and isothermal cylinder confined in a horizontal channel. The blockage ratio and the Prandtl number are fixed at 0.05 and 0.7 respectively. The continuity, momentum and energy equations are solved via the finite-volume method. Our results are in very good agreement with those resulting from preceding studies to Ri=0 and a=0, which makes it possible to validate on important extension of present work. The mixed convective flow and heat transfer is simulated by the Reynolds number is studied in the range 1 <Re <40, the Richardson number (Ri) demonstrating the influence of thermal buoyancy ranges from 0 to 1 and for rotational rate from α=0 to α=4. Major emphasis is given to the effect of rotating a circular cylinder on the mixed convection and also on the measurements of the local and average Nusselt numbers are also obtained. Furthermore, the representative streamlines and isotherm patterns are presented and discussed.
Highlights
The combined forced and free convection heat transfer from cylinder has numerous industrial processes
This work is concerned with the mixed convection heat transfer from a rotating circular cylinder for varying values of Richardson numbers in the steady regime
This paper present numerical investigation, the effects of rotation rate α on the characteristics of laminar fluid flow and heat transfer in mixed convection from an confined a rotating circular horizontal and isothermal cylinder in a rectangular channel are studied in detail, for the fixed value of the Prandtl number (Pr=0.71) as the operating fluid computations are performed at a representative Reynolds numbers in the range of 1
Summary
The combined forced and free convection heat transfer from cylinder has numerous industrial processes. This work is concerned with the mixed convection heat transfer from a rotating circular cylinder for varying values of Richardson numbers in the steady regime. Numerical analysis of these kinds can be found in many literatures. This paper present numerical investigation, the effects of rotation rate α on the characteristics of laminar fluid flow and heat transfer in mixed convection from an confined a rotating circular horizontal and isothermal cylinder in a rectangular channel are studied in detail, for the fixed value of the Prandtl number (Pr=0.71) as the operating fluid computations are performed at a representative Reynolds numbers in the range of 1
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