An unsteady axisymmetric Williamson nanofluid flow over a radially stretching Riga plate for the inclusion of mixed convection and thermal radiation

• Published in: Partial differential equations in applied mathematics : a spin-off of Applied Mathematics Letters Vol. 6; p. 100456
• Main Authors: Ramanjini, V., Gopi Krishna, G., Mishra, S.R., Kumari, S.V. Sailaja, Sree, Hari Kamala
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2022; Elsevier
• Subjects: First order slip and chemical reaction; Mixed convection; OHAM; Radially stretching Riga plate; Thermal and solutal Biot numbers; Williamson nanofluid; OHAM; Radially stretching Riga plate; First order slip and chemical reaction; Mixed convection; Williamson nanofluid; Thermal and solutal Biot numbers
• ISSN: 2666-8181; 2666-8181
• DOI: 10.1016/j.padiff.2022.100456

This paper aims to investigate the two-dimensional unsteady boundary layer flow phenomena of a Williamson nanofluid over a radially stretching Riga plate in the existence of mixed convection and thermal radiation. In addition to these, first-order slip, thermal and solutal boundary conditions are also considered. The enforcing governing equations of nonlinear PDE’s are distorted into a set of ODE’s to support given similarity transformations and stream functions. Further, these set of nonlinear equations with appropriate boundary conditions are solved by an “Optimal Homotopy Analysis Method” (OHAM). The characteristic behavior of relevant physical parameters on the dimensionless profiles is presented through the graphs and tables. It is interesting to note that the current results agree with the existing literature, which reveals the validity of the present work. [Display omitted] •Williamson nanofluid over a radially stretching Riga plate with the mixed convection and thermal radiation is exhibited.•The inclusion of the first-order slip, thermal and solutal boundary conditions enriches the study.•The proposed nonlinear equations with appropriate boundary conditions are solved by “Optimal Homotopy Analysis Method” (OHAM).•For the improved modified Hartmann number, the velocity distribution reduces.