Numerical Analysis of Radiative Effects on Natural Convection in Asymmetrically Heated Vertical Convergent Channels

Authors

  • Arch Jignesh Desai Mechanical Engineering Department, Sardar Vallabhbhai National Institute of Technology
  • Vatsal Nimesh Thakkar Mechanical Engineering Department, Sardar Vallabhbhai National Institute of Technology

Keywords:

Natural convection; vertical channel; convergent channel; asymmetrically heating; Radiative Effects

Abstract

—This paper presents a numerical analysis of the effects of radiation on natural convection flow and heat
transfer inside the asymmetrically heated convergent channels formed by two flat plates. One of the side walls is oriented
vertically and is thermally insulated, and the opposite wall is tilted to various degrees to form convergent angles and is
heated uniformly with a constant heat flux. Air (Pr 0.71) is considered as the working fluid. The flow is assumed to be
steady-state, two-dimensional, laminar, and incompressible with negligible viscous dissipation. Results in terms of wall
temperature profiles as a function of the wall inclination angle, channel aspect ratio and the heat flux are given for two
values of the wall emissivity. Flow visualization is also carried out to show the peculiar pattern of the flow between the
plates in several configurations. Dimensionless maximum temperatures are correlated to the Rayleigh number, in the
investigated range from 102
to 108
and 0° ≤ ???? ≤ 10 .

Published

2017-10-25

How to Cite

Arch Jignesh Desai, & Vatsal Nimesh Thakkar. (2017). Numerical Analysis of Radiative Effects on Natural Convection in Asymmetrically Heated Vertical Convergent Channels. International Journal of Advance Engineering and Research Development (IJAERD), 4(10), 734–749. Retrieved from https://www.ijaerd.org/index.php/IJAERD/article/view/3942