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Buoyancy induced Convection from bi-heaters in a cavity: A Numerical Study

[+] Author and Article Information
Dr. Asis Giri

Department of Mechanical Engineering, North Eastern Regional Institute of Science and Technology, Itanagar-791109, India
measisgiri@rediffmail.com

Swastika Patel

Department of Mechanical Engineering, North Eastern Regional Institute of Science and Technology, Itanagar-791109, India
swastika904u@gmail.com

1Corresponding author.

ASME doi:10.1115/1.4040140 History: Received October 02, 2016; Revised April 26, 2018

Abstract

A computational study of natural convection from bi-heaters of finite thickness and finite conductivity placed on a finite thickness and finite conductive bottom plate of a cavity is performed under constant heat input condition. Cavity is cooled by the sidewalls, while the top and backside of the bottom plate are insulated. Streamline, isotherms and local heat flux distribution of the sidewalls are discussed. Base Grashof number is chosen as 2.5×106. Bi-heater maintains a non-dimensional distance of 0.4 between them. Left heater is placed at a non-dimensional distance of 0.2 from the left wall. Heater length ratio is varied from 0.4 to 1.7, while heater strength ratio is varied from 0.4 to 3.0. Optimum operating temperature condition is found from the analysis.

Copyright (c) 2018 by ASME
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