February 29, 2024
Ehsan Izadpanah

Ehsan Izadpanah

Academic Rank: Associate professor
Address:
Degree: Ph.D in Mechanical Engineering
Phone: 09133570349
Faculty: Faculty of Engineering

Research

Title A comprehensive investigation of vortex induced vibration effects on the heat transfer from a circular cylinder
Type Article
Keywords
Journal INTERNATIONAL JOURNAL OF THERMAL SCIENCES
DOI
Researchers Ehsan Izadpanah (First researcher) , Yasser Amini (Second researcher) , Ali Ashouri (Third researcher)

Abstract

In this paper, the effect of vortex induced vibration (VIV) on convective heat transfer from an elastically mounted rigid circular cylinder in cross-flow is investigated numerically. The motion of cylinder is modeled by using a mass-spring-damping system. The effect of reduced velocity and damping ratio on the vortex formation, vortex shedding process, cylinder displacement amplitude, Nusselt number and the position of maximum local Nusselt number is studied. In this study the Reynolds Number and the mass ratio are 150 and 2, respectively. Furthermore, different values of reduced velocity and damping ratio are investigated (U_r= 3, 4, 5, 6, 7, 8 and ?= 0. 0.01, 0.05, 0.1). The numerical results demonstrate that the reduced velocity and damping ratio can affect the heat transfer considerably. The beating phenomenon is occurs at U_r= 4 and ?= 0.05 which leads to changes in the displacement amplitude and Nusselt number widely with respect to the time. In the beating phenomenon the total Nusselt number decreases in comparison with a stationary cylinder. The maximum heat transfer enhancement is obtained at U_r=4, ?=0.