Heat and mass transfer of nanofluid through an impulsively vertical stretching surface using the spectral relaxation method

Boundary value problems

Sabyasachi Mondal¹  Precious Sibanda¹  Nageeb AH Haroun¹  Sandile S Motsa¹  Mohammad M Rashidi² 

[1] School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa;Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University, Shanghai, China

关键词: nanofluids;    impulsively stretching surface;    magnetohydrodynamic;    chemical reaction parameter;    spectral relaxation method;   

DOI  :  10.1186/s13661-015-0424-3

学科分类：数学（综合）

来源: SpringerOpen

【 摘 要 】

In this paper, we investigate heat and mass transfer in a magnetohydrodynamic nanofluid flow due to an impulsively started stretching surface. The flow is subject to a heat source, a chemical reaction, Brownian motion and thermophoretic parameters which are assumed to be significant. We have further assumed that the nanoparticle volume fraction at the wall may be actively controlled. The physical problem is modeled using systems of nonlinear differential equations which have been solved numerically using the spectral relaxation method. Comparing with previously published results by Khan and Pop (Int. J. Heat Mass Transf. 53:2477-2483, 2010) shows an excellent agreement. Some of the particular findings are that the skin friction coefficient decreases with an increase in the nanoparticle volume fraction, the heat transfer coefficient decreases with an increase in the nanoparticle volume fraction and that the mass transfer coefficient increases with an increase in the nanoparticle volume fraction.

【 授权许可】

CC BY