Numerical Study of Heat Transfer and Fluid Flow over Circular Cylinders in 2D Cross Flow

Sarah Rabee Nashee; Haiyder Minin Hmood

doi:10.37934/araset.30.2.216224

Authors

Sarah Rabee Nashee Department of Mechanical Engineering, College of Engineering, University of Thi-Qar, Thi-Qar, 64001, Iraq
Haiyder Minin Hmood Department of Scientific Affairs and Postgraduate Studies, College of Education for Human Sciences, University of Thi-Qar, Thi-Qar, 64001, Iraq

DOI:

https://doi.org/10.37934/araset.30.2.216224

Keywords:

Heat Transfer, Computational Fluid Dynamics, Nusselt Number, Circular Cylinder

Abstract

Among the many experiments Which deals with the study of the characteristics of flow, a numerical study of flow air (Pr=0.71) crosses a circular cylinder is conducted. Variations in flow and thermal characteristics such as average Nusselt number, local pressure coefficient and drag coefficient are presented around the cylinders for Reynold numbers ranging from 100 to 5000 by solving the incompressible two-dimensional unsteady Navier-Stokes and energy equations. Commercial software package FLUENT 19 is applied to solve the equations. The diameter of the circle is D = 20 mm, the width is 20 times the diameter of the cylinder. The results obtained are compared with data of previous study for Nusselt Number values showed acceptable agreement. The results of the drag coefficient confirm a noticeable decrease in the transition from low values of Reynolds numbers to the high values.