Numerical study of nano-biofilm stagnation flow from a nonlinear stretching/ shrinking surface with variable nanofluid and bioconvection transport properties

Ferdows, M, Alsenafi, A, Beg, OA ORCID: https://orcid.org/0000-0001-5925-6711, Beg, TA and Kadir, A 2021, 'Numerical study of nano-biofilm stagnation flow from a nonlinear stretching/ shrinking surface with variable nanofluid and bioconvection transport properties' , Scientific Reports . (In Press)

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Abstract

A mathematical model is developed for stagnation point flow toward a stretching or shrinking sheet of liquid nano-biofilm containing spherical nanoparticles and bioconvecting gyrotactic micro-organisms. Variable transport properties of the liquid (viscosity, thermal conductivity, nano-particle species diffusivity) and micro-organisms (species diffusivity) are considered. Buongiorno’s two-component nanoscale model is deployed and spherical nanoparticles in a dilute nanofluid considered. Using a similarity transformation, the nonlinear systems of partial differential equations is converted into nonlinear ordinary differential equations. These resulting equations are solved numerically using a central space finite difference method in the CodeBlocks Fortran platform. Graphical plots for the distribution of reduced skin friction coefficient, reduced Nusselt number, reduced Sherwood number and the reduced local density of the motile microorganisms as well as the velocity, temperature, nanoparticle volume fraction and the density of motile microorganisms are presented for the influence of wall velocity power-law index (m), viscosity parameter (

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Scientific Reports
Publisher: Nature Publishing Group
ISSN: 2045-2322
Related URLs:
Depositing User: OA Beg
Date Deposited: 31 Mar 2021 11:04
Last Modified: 31 Mar 2021 11:15
URI: http://usir.salford.ac.uk/id/eprint/59970

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