Combined buoyancy and Marangoni convective heat transport of CNT-water nanofluid in an open chamber with influence of magnetic field and isothermal solid block

Abstract

This paper proposes combined buoyancy and Marangoni convective heat phenomenon of CNT water nano-liquid in an open chamber subject to isothermal solid block and magnetic field. The Finite Volume Method (FVM) is incorporated to discretize the transport modeled expressions and are solved by SIMPLE algorithm. A comparison study made to authenticate the inspiration of Marangoni convection, magnetic field and isothermal block with the former literatures and shows the reliable agreement. This study scrutinizes the impact of different parameters such as Rayleigh number, Hartmann number, Marangoni number and the nanoparticles concentration. The computational result of the present analysis is deliberated with the graphical representation of streamlines, isotherms contour, velocity fields and average Nusselt number. The overall heat transport rate of the chamber is greatly improved by the rising values of Ra and ϕ but follows a decreasing trend with Ha.