Hall and ion slip effects on Unsteady MHD Convective Rotating flow of Nanofluids\u2014Application in Biomedical Engineering

M Veera Krishna,Ali J Chamkha

doi:10.1186/s42787-019-0065-2

Abstract

There is an intense worldwide activity in the development of instrumentation for medical diagnosis and bioscreening based on biological labeling and detection of nanoparticles. Based on this profound observation, Hall and ion slip effects on magnetohydrodynamic (MHD) free convective rotating flow of nanofluids in a porous medium past a moving vertical semi-infinite flat plate are investigated. The equations for governing flow are solved analytically by perturbation approximation. The effects of various parameters on the flow are discussed through graphs and tables. The velocity increases with Hall and ion slip parameters. An increase in the convective parameter led to amplify the thermal boundary layer thickness, but when the heat generation parameter is taken into consideration, an opposite effect occurs. The skin friction coefficient increases with an increase in nanoparticle volume fraction and it reduces with increase in Hall and ion slip parameters. Outcomes disclose that the impact of thermal convection of nanoparticles has increased the temperature distribution, which helps in destroying the cancer cells during the drug delivery process.

Highlights

The homogeneous mixture of nanoparticles contains two liquids known as nanofluids
Formulation and solution of the problem We have considered Hall and ion slip effects on the unsteady free convective flow of nanofluids (Cu and TiO2) of ambient temperature T∞ over a vertical semi-infinite moving plate entrenched in a homogeneous porous medium under thermal buoyancy effect with a constant heat source and convective boundary conditions
The resultant velocity decreases with an increase in Hartmann number, suction parameter, solid volume fraction of nanoparticles, and rotation parameter but an opposite effect is noticed for Hall and ion slip parameters, injection parameter, and permeability parameter

Summary

Introduction

The homogeneous mixture of nanoparticles contains two liquids known as nanofluids. Nanoparticles operating in nanofluids are composed of carbon nanotubes, oxides, metals, and carbides. Veera Krishna and Chamkha [4] investigated the diffusion-thermo, radiation-absorption and Hall and ion slip effects on MHD free convective rotating flow of nanofluids (Ag and TiO2) past a semiinfinite permeable moving plate with a constant heat source.

Results

Conclusion