Entropy optimization on MHD flow of Williamson hybrid nanofluid with Cattaneo–Christov heat flux: a comparative study on stretching cylinder and sheet
M. Vijatha, P. Bala Anki Reddy
Abstract
ABSTRACTIn the present study, we investigate the influence of entropy on non-Newtonian fluid over a stretchable cylinder in the presence of Darcy-Forchheimer, heat flux and thermal radiation. Moreover, Cu and CuO nanoparticles are suspended in the base fluid blood. The basic PDE's (Partial Differential equations) are transformed into ODE's (Ordinary Differential equations) by ensuring correct self-similarity transformations. ODE's are resolved using a fourth-order Runge–Kutta along with shooting procedure. Numerical method (NM) and Homotopy perturbation method (HPM) solutions for the nonlinear system are obtained so that they compared to each other for the case of cylinder and sheet. In this model, we made a comparison between the stretching cylinder and a flat sheet and those are represented via graphically. Moreover, the obtained results compared with the previous literature and are found to be an excellent agreement. It is found that the fluid velocity reduces for the higher values of magnetic parameter. Higher values of the heat generation parameter improve the temperature profiles. Nusselt number decreases when developing Darcy–Forchheimer number and temperature time relaxation parameter.KEYWORDS: Williamson fluidmagnetohydrodynamicCattaneo–Christov heat flow modelentropy generationporous mediumDarcy-Forchheimer Disclosure statementAuthor's have no actual or potential conflict of interest including financial, personal or other relationships with other people or organizations.