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Research articles

ScienceAsia 42S(2016): 5-10 |doi: 10.2306/scienceasia1513-1874.2016.42S.005

Mixed convection flow over a horizontal circular cylinder in a viscous fluid at the lower stagnation point with convective boundary conditions

Norhafizah Md Sarifa,*, Mohd Zuki Salleha, Roslinda Nazarb

ABSTRACT:     In this paper, we study the steady mixed convection boundary layer flow over a horizontal circular cylinder in a viscous fluid with the bottom surface of the cylinder heated by convection from a hot fluid. The resulting system of nonlinear partial differential equations is solved numerically using an efficient implicit finite-difference scheme known as the Keller box method along with Newton's linearization techniques. The special case at the lower stagnation point of the cylinder is considered. The solutions for the flow and heat transfer characteristics are obtained and presented for various values of the governing parameters, namely, the mixed convection parameter, the Prandtl number, and the conjugate parameter. The effects of these parameters on the flow and heat transfer characteristic are thoroughly examined in this study.

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a Applied and Industrial Mathematics Research Group, Faculty of Industrial Science & Technology, Universiti Malaysia Pahang, 26300 UMP Kuantan, Pahang, Malaysia
b School of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

* Corresponding author, E-mail: norhafizah@ump.edu.my

Received 31 Aug 2014, Accepted 20 Jul 2016