title: The Effect of Thermophoresis on Unsteady Oldroyd-B Nanofluid Flow over Stretching Surface.
abstract: There are currently only a few theoretical studies on convective heat transfer in polymer nanocomposites. In this paper, the unsteady incompressible flow of a polymer nanocomposite represented by an Oldroyd-B nanofluid along a stretching sheet is investigated. Recent studies have assumed that the nanoparticle fraction can be actively controlled on the boundary, similar to the temperature. However, in practice, such control presents significant challenges and in this study the nanoparticle flux at the boundary surface is assumed to be zero. We have used a relatively novel numerical scheme; the spectral relaxation method to solve the momentum, heat and mass transport equations. The accuracy of the solutions has been determined by benchmarking the results against the quasilinearisation method. We have conducted a parametric study to determine the influence of the fluid parameters on the heat and mass transfer coefficients.
authors: Department of Mathematics, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa.
authors: Faiz G
authors: FG
authors: Awad
authors: University of KwaZulu-Natal, School of Mathematics, Statistics and Computer Science, Private Bag X01, Scottsville, Pietermaritzburg 3209, South Africa.
authors: Sami M S
authors: SM
authors: Ahamed
authors: University of KwaZulu-Natal, School of Mathematics, Statistics and Computer Science, Private Bag X01, Scottsville, Pietermaritzburg 3209, South Africa.
authors: Precious
authors: P
authors: Sibanda
authors: Department of Mathematics, University of Johannesburg, P.O. Box 17011, Doornfontein 2028, South Africa.
authors: Melusi
authors: M
authors: Khumalo
mesh_terms: D003198:Computer Simulation; D006358:Hot Temperature; D057446:Hydrodynamics; D008956:Models, Chemical; D008962:Models, Theoretical; D053761:Nanocomposites / Q000737:chemistry*; D012996:Solutions; D013499:Surface Properties; D013816:Thermodynamics
chemical_list: D012996:Solutions