THERMAL RADIATION EFFECT ON A BOUYANCY-INDUCED COUETTE FLOW DUE TO NEWTONIAN HEATING IN AN UPSTANDING CHANNEL

Authors

Keywords:

Viscous dissipation , Thermal radiation , thermal radiation , Navier slip , thermal buoyancy effect , vertical channel

Abstract

This paper illustrates the impact of optically thick thermal radiation on buoyancy-induced flow with viscous dissipation and Navier slip condition over an up-facing channel. The modelled equations are nonlinear coupled ordinary differential equations, which are treated with the regular perturbation method. The actions of key parameters controlling the flow behaviour in terms of momentum and energy distributions are demonstrated graphically. The skin friction and Nusselt number on the both surfaces have also been computed. The present study is valid for the limiting case because it is based on comparison with earlier studies that back it up. The significant results from this study are: thermal radiation R act as extra aiding force, ie, growing values of R boosts the fluid temperature and velocity, greater Brickman number represent better convective heating at the channel surface, leading to a stronger temperature and velocity. Additionally, the heat transfer rate weakens as boundary thickness causes less heat transfer gradient. The outcome of this research will contribute significantly in widening the applications of thermal radiation effects for multiple heating devices and industrial uses for energy production in solar systems, wound treatment in medical science, space vehicles and aircraft propulsion in engineering and space technology, to mention a few.

 

Author Biographies

Godwin Ojemeri

Department of Mathematics, Federal University of Agriculture, Zuru, PMB 28, Kebbi State

Muhammed Murtala Hamza

Department of Mathematics, Usmanu Danfodiyo University, PMB 2346, Sokoto State

Agnes Marian Ochiba

Department of Mathematics, Usmanu Danfodiyo University, PMB 2346, Sokoto State

Isaac Obiajulu Onwubuya

Department of Mathematics, Air Force Institute of Technology, PMB 2104, Kaduna State

Adeniran Kolade Ademuwagun

Department of Electrical and Electronics, Air Force Institute of Technology, PMB 2104, Kaduna State 

Abubakar Muhammad Tsafe

Department of Mathematics, Usmanu Danfodiyo University, PMB 2346, Sokoto State

Ibrahim Ahmad Sifawa

Department of Mathematics, Sokoto State University, Sokoto State

Dimensions

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Flow geometry and physical coordinates

Published

25-08-2025

How to Cite

THERMAL RADIATION EFFECT ON A BOUYANCY-INDUCED COUETTE FLOW DUE TO NEWTONIAN HEATING IN AN UPSTANDING CHANNEL. (2025). FULafia Journal of Science and Technology , 9(2), 9-18. https://doi.org/10.62050/fjst2025.v9n2.498

Issue

Vol. 9 No. 2 (2025): Fulafia Journal of Science and Technology (FJST) (In Progress)

Section

Physical Sciences
Copyright & Licensing

How to Cite

THERMAL RADIATION EFFECT ON A BOUYANCY-INDUCED COUETTE FLOW DUE TO NEWTONIAN HEATING IN AN UPSTANDING CHANNEL. (2025). FULafia Journal of Science and Technology , 9(2), 9-18. https://doi.org/10.62050/fjst2025.v9n2.498

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