Boundary layer flow of hybrid nanofluid-based carbon nanotubes and heat transfer over a moving wedge with the magnetohydrodynamic effect

N. A. A. Samat^1,2 - N. Bachok^1,3 - N. M. Arifin¹

¹ Department of Mathematics and Statistics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang Selangor, Malaysia
² Department of Management, Faculty of Management and Information Technology, Universiti Sultan Azlan Shah, 33000 Kuala Kangsar Perak, Malaysia
³ Institute for Mathematical Research, Universiti Putra Malaysia, 43400 UPM Serdang Selangor, Malaysia

Abstract
A steady and laminar flow over a moving wedge in water-based hybrid nanofluids with single and multi-walled carbon nanotubes (SWCNTs-MWCNTs) is examined. The flow is surrounded by a constant body wall and ambient temperature. A model of partial differential equations (PDEs) with the magnetohydrodynamic effect on the momentum equation has been developed and transformed analytically to a model of non-dimensional ordinary differential equations (ODEs) by applying the similarity variables method. Then, the ODEs model is solved numerically using the MATLAB bvp4C program. Several varying parameters, such as the magnetic parameter, the moving parameter, the SWCNTs-MWCNTs volume fraction parameter, and the wedge parameter, are applied to investigate the type of computational solutions and physical quantities. All of the findings are presented and illustrated in tables and graphs. It was found that multiple solutions appear when the wedge moves in the opposite direction. Besides, the increase in the magnetic parameter and SWCNTs-MWCNTs volume fraction parameter will increase both the skin friction coefficient and the local Nusselt number. Tables 3, Figs 8 Refs 51.