RT Journal Article ID 3cb563803e3435c6 A1 Shokouhmand, Hossein A1 Abadi, Seyyed Mohammad Ali Noori Rahim T1 THE EFFECT OF VERTICAL VIBRATIONS ON NATURAL HEAT TRANSFER FROM AN ISOTHERMAL ARRAY OF CYLINDERS JF Computational Thermal Sciences: An International Journal JO CTS YR 2010 FD 2010-12-29 VO 2 IS 6 SP 525 OP 534 K1 natural convection K1 finite element method K1 ALE description K1 vertical oscillation AB This paper presents the fractional step algorithm using Characteristic Based Split (CBS) in ALE framework for the numerical simulation of unsteady laminar free convection heat transfer from an oscillating array of isothermal circular cylinders. The variations of flow and thermal fields are classified into a class of moving boundary problems. The moving interfaces between the fluid and cylinders have been considered. Governing equations consisting of continuity, momentum, and energy equations were solved numerically by finite element method and arbitrary Lagrangian-Eulerian kinematics description. The effects of cylinder spacing, Rayleigh number, and frequency of oscillations on the flow structures and heat transfer in the array were investigated. The results show that increments of amplitude of vibrations and Rayleigh number increase the average Nusselt number of each cylinder PB Begell House LK https://www.dl.begellhouse.com/journals/648192910890cd0e,518b06c45751dad4,3cb563803e3435c6.html