Effect of thermal radiation on heat transfer in plane wall jet flow of Casson nanofluid with suction subject to a slip boundary condition

Abstract

A Glauert type laminar wall jet issuing into a stationary liquid medium lying above a wall has technical uses in wall cooling and flow control. It plays a vital role in industrial applications like cooling/heating by impingement of jet, turbine blades, film cooling, mass and heat transfer phenomena. In this regard, a steady incompressible two-dimensional laminar Glauert kind wall jet is scrutinized in this study by considering nanoparticles suspension in the base liquid sodium alginate $(NaA\lg )$ with suction and wall slip boundary conditions. Further, a comparative study is done by considering aluminum alloy$(AA7075)$ and single-walled carbon nanotube $(SWCNT)$ as nanoparticles. The reduced ordinary differential equations (ODEs) are numerically solved by applying Runge–Kutta–Fehlberg fourth fifth-order (RKF-45) technique along with the shooting method. Results reveal that $NaA\lg -SWCNT$ Casson nanofluid shows enhanced heat transfer than $NaA\lg -AA7075$ Casson nanoliquid for increased values of radiation parameter. The rising values of the Casson parameter deteriorate the heat transfer rate of both nanoliquids but an inverse trend is seen for improved values of radiation parameter.

KEYWORDS:

• Wall jet flow
• Casson nanofluid
• thermal radiation
• suction
• slip condition

Acknowledgements

The authors would like to thank the Ministry of education in Saudi Arabia and Jeddah University for their support.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Jeddah University.