Mixed convection over a horizontal circular cylinder embedded in porous medium immersed in a nanofluid with convective boundary conditions at lower stagnation point: A numerical solution

• Main Authors: Norhafizah, Md Sarif, Mohd Zuki, Salleh, Roslinda, Nazar
• Format: Conference or Workshop Item
• Language: English; English
• Published: EDP Sciences 2018
• Subjects: Q Science (General)
• Online Access: http://umpir.ump.edu.my/id/eprint/22165/1/Mixed%20convection%20over%20a%20horizontal%20circular%20cylinder%20embedded%20in%20porous%20medium%20immersed.pdf; http://umpir.ump.edu.my/id/eprint/22165/2/Mixed%20convection%20over%20a%20horizontal%20circular%20cylinder%20embedded%20in%20porous%20medium%20immersed%202.pdf; http://umpir.ump.edu.my/id/eprint/22165/; https://www.matec-conferences.org/articles/matecconf/abs/2018/48/matecconf_meamt2018_02004/matecconf_meamt2018_02004.html

This study aims to examine the effect of governing parameters on the flow and heat transfer of the steady mixed convection flow embedded in porous medium with convective boundary conditions. The resulting system of nonlinear partial differential equations is solved numerically. The special case at the lower stagnation point of the cylinder is observed and the case where bottom surface of the cylinder is heated by convection from hot fluids is considered. Numerical solutions are obtained for the velocity, temperature and nanoparticle volume fraction profiles for two values of governing parameters namely convective parameter γ and Lewis number Le. It is found that as the convective parameter γ increases, velocity profile, temperature and nanoparticle volume fraction profile also increases.