A1 Journal article – refereed

MHD Williamson Nanofluid Flow over a Slender Elastic Sheet of Irregular Thickness in the Presence of Bioconvection




List of Authors: Wang Fuzhang Z, Asjad Muhammed Imran, Rehman Saif Ur, Ali Bagh, Hussain Sajjad, Gia Tuan Nguyen, Muhammad Taseer

Publisher: MDPI

Publication year: 2021

Journal: Nanomaterials

Journal name in source: NANOMATERIALS

Journal acronym: NANOMATERIALS-BASEL

Volume number: 11

Issue number: 9

Number of pages: 19

eISSN: 2079-4991

DOI: http://dx.doi.org/10.3390/nano11092297


Abstract

Bioconvection phenomena for MHD Williamson nanofluid flow over an extending sheet of irregular thickness are investigated theoretically, and non-uniform viscosity and thermal conductivity depending on temperature are taken into account. The magnetic field of uniform strength creates a magnetohydrodynamics effect. The basic formulation of the model developed in partial differential equations which are later transmuted into ordinary differential equations by employing similarity variables. To elucidate the influences of controlling parameters on dependent quantities of physical significance, a computational procedure based on the Runge-Kutta method along shooting technique is coded in MATLAB platform. This is a widely used procedure for the solution of such problems because it is efficient with fifth-order accuracy and cost-effectiveness. The enumeration of the results reveals that Williamson fluid parameter lambda, variable viscosity parameter Lambda(mu) and wall thickness parameter sigma impart reciprocally decreasing effect on fluid velocity whereas these parameters directly enhance the fluid temperature. The fluid temperature is also improved with Brownian motion parameter Nb and thermophoresis parameter Nt. The boosted value of Brownian motion Nb and Lewis number Le reduce the concentration of nanoparticles. The higher inputs of Peclet number Pe and bioconvection Lewis number Lb decline the bioconvection distribution. The velocity of non-Newtonian (Williamson nanofluid) is less than the viscous nanofluid but temperature behaves oppositely.


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Last updated on 2021-18-10 at 14:09