Computation of Melting Dissipative Magnetohydrodynamic Nanofluid Bioconvection with Second-order Slip and Variable Thermophysical Properties

Computation of Melting Dissipative Magnetohydrodynamic Nanofluid Bioconvection with Second-order Slip and Variable Thermophysical Properties

This paper studies the combined effects of viscous dissipation, first and second-order slip and variable transport properties on phase-change hydromagnetic bio-nanofluid convection flow from a stretching sheet. Nanoscale materials possess a much larger surface to volume ratio than bulk materials, si...

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Bibliographic Details
Published in:Applied sciences Vol. 9; no. 12; p. 2493
Main Authors: Amirsom, Nur Ardiana, Uddin, Md. Jashim, Md Basir, Md Faisal, Kadir, Ali, Bég, O. Anwar, Md. Ismail, Ahmad Izani
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-06-2019
Subjects:
bioconvection
BVP4C
Chebyshev approximation
Chemical reactions
Computational fluid dynamics
Convection
Copper
Finite volume method
Fluid flow
Fluids
Free convection
Heat conductivity
Heat transfer
Investigations
Laminar flow
Liquid flow
Magnetic fields
Magnetic properties
Magnetohydrodynamics
MATLAB
melting heat transfer
micro-organisms
Micropolar fluids
Molten salts
nanofluid
Nanofluids
Nanomaterials
Nanoparticles
Nusselt number
Phase change materials
Radiation
Radiative heat transfer
second-order slip
Shear stress
Spectral methods
Thermal properties
Thermophysical properties
variable transport properties
VIM
Viscosity
viscous dissipation
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Summary:This paper studies the combined effects of viscous dissipation, first and second-order slip and variable transport properties on phase-change hydromagnetic bio-nanofluid convection flow from a stretching sheet. Nanoscale materials possess a much larger surface to volume ratio than bulk materials, significantly modifying their thermodynamic and thermal properties and substantially lowering the melting point. Gyrotactic non-magnetic micro-organisms are present in the nanofluid. The transport properties are assumed to be dependent on concentration and temperature. Via appropriate similarity variables, the governing equation with boundary conditions are converted to nonlinear ordinary differential equations and are solved using the BVP4C subroutine in the symbolic software MATLAB. The non-dimensional boundary value features a melting (phase change) parameter, temperature-dependent thermal conductive parameter, first as well as second-order slip parameters, mass diffusivity parameter, Schmidt number, microorganism diffusivity parameter, bioconvection Schmidt number, magnetic body force parameter, Brownian motion and thermophoresis parameters. Extensive computations are visualized for the influence of these parameters. The present simulation is of relevance in the fabrication of bio-nanomaterials for bio-inspired fuel cells.
ISSN:2076-3417
2076-3417
DOI:10.3390/app9122493