THERMAL SCIENCE

International Scientific Journal

Abuzar Ghaffari

,

Tariq Javed

,

Irfan Mustafa

,

Fotini Labropulu

MODELING AND SIMULATION OF NATURAL CONVECTION FLOW ALONG A ROUGH SURFACE OF SINUSOIDAL NATURE WITH VARIABLE HEAT FLUX: USING KELLER BOX SCHEME

ABSTRACT
In this study, natural convection flow along a vertical wavy surface has been investigated with variable heat flux. The governing equations are transformed into dimensionless PDE by using the non-dimensional variables and then solved numerically by using an implicit finite difference scheme known as Keller Box method. The effects of the parameters amplitude of the wavy surface, α, exponent of the variable heat flux, m, and Prandtl number on the local skin friction coefficient and local Nusselt number are shown graphically. It is found that for the negative value of exponent of the variable heat flux, m, the local skin friction coefficient increases and Nusselt number decreases but the opposite behavior is observed for the positive values of m. The comparison of limiting case with the previous study is shown through table and it is found that the solution obtained is in excellent agreement with the previous studies.
KEYWORDS
natural convection, variable heat flux, vertical wavy surface, numerical solution
PAPER SUBMITTED: 2017-09-29
PAPER REVISED: 2018-01-08
PAPER ACCEPTED: 2018-03-06
PUBLISHED ONLINE: 2018-04-28
DOI REFERENCE: https://doi.org/10.2298/TSCI170929106G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 6, PAGES [3391 - 3400]
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Modeling and simulation of natural convection flow along a rough surface of sinusoidal nature with variable heat flux: Using Keller box scheme

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence