Numerical Simulation of Flow and Heat Transfer for a Cylinder in Free Vibration

This study deals with the numerical investigation of two-dimensional, Newtonian fluid flow around and heat transfer from a circular cylinder undergoing one-degreeof-freedom free vibration.The governing equations with the boundary and initial conditions are solved using the finite difference method.During the computations mass ratio, structural damping and Reynolds number are kept at constant values of m*=10, ζ=0.01 and Re=200, respectively, and the reduced velocity is varied in the range of U*=4-7.Since a newly extended in-house code is applied, validation is required; computational results compare well with those available in the literature.Besides force coefficients, the mechanical energy and heat transfer between the cylinder and the fluid are also investigated.Large heat transfer and mechanical energy values are obtained near the maximum amplitude of cylinder oscillation.