Abstract

The aim of this research work is to investigate the innovative concept of magnetohydrodynamic (MHD) three-dimensional rotational flow of nanoparticles (single-walled carbon nanotubes and multi-walled carbon nanotubes). This flow occurs in the presence of non-linear thermal radiation along with heat generation or absorption based on the Casson fluid model over a stretching sheet. Three common types of liquids (water, engine oil, and kerosene oil) are proposed as a base liquid for these carbon nanotubes (CNTs). The formulation of the problem is based upon the basic equation of the Casson fluid model to describe the non-Newtonian behavior. By implementing the suitable non-dimensional conditions, the model system of equations is altered to provide an appropriate non-dimensional nature. The extremely productive Homotopy Asymptotic Method (HAM) is developed to solve the model equations for velocity and temperature distributions, and a graphical presentation is provided. The influences of conspicuous physical variables on the velocity and temperature distributions are described and discussed using graphs. Moreover, skin fraction coefficient and heat transfer rate (Nusselt number) are tabulated for several values of relevant variables. For ease of comprehension, physical representations of embedded parameters such as radiation parameter ( R d ) , magnetic parameter ( M ) , rotation parameter ( K ), Prandtl number ( P r ), Biot number ( λ ) , and heat generation or absorption parameter ( Q h ) are plotted and deliberated graphically.

Highlights

  • Single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) are similar in certain aspects, but they have some striking differences

  • The present research has been carried out in order to study magnetohydrodynamics in the three-dimensional rotational flow of nanoparticles in the existence of non-linear thermal radiation along with heat generation or absorption based on the Casson fluid model over a stretching sheet

  • The influence of specific model quantities, such as K, M, Prandtl number (Pr), Qh, radiation parameter (Rd), and λ on f 0 (η ), g(η ), and Θ(η ) for SWCNTs and MWCNTs as nanoparticles is highlighted in the present discussion

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Summary

Introduction

Single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) are similar in certain aspects, but they have some striking differences. SWCNTs are an allotrope of sp hybridized carbon, and are similar to fullerenes. Single-walled carbon nanotubes (SWCNTs) have unique character due to their unusual structure. The structure of SWCNTs demonstrates significant optical and electronic features, tremendous strength and flexibility, and high thermal and chemical stability. SWCNTs are expected to dramatically impact several industries, .

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