Open AccessDual Solutions in Mixed Convection Stagnation-Point Flow Over a Vertical Stretching Sheet with External Magnetic Field and Radiation Effect
Author(s) -
Fadzilah Md Ali,
Amira Natasya Azizan Khamat,
Mohamad Mustaqim Junoh
Publication year - 2021
Publication title -
journal of advanced research in fluid mechanics and thermal sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.247
H-Index - 13
ISSN - 2289-7879
DOI - 10.37934/arfmts.80.2.2232
Subject(s) - boundary layer , nusselt number , stagnation point , mechanics , combined forced and natural convection , ordinary differential equation , parasitic drag , hartmann number , flow (mathematics) , stagnation temperature , partial differential equation , physics , classical mechanics , mathematics , convection , differential equation , mathematical analysis , natural convection , heat transfer , reynolds number , turbulence
The purpose of this research is to study the problem of mixed convection stagnation-point flow on a vertical stretching sheet with external magnetic field, with the effect of radiation is taken into account. The partial differential equations are reduced to ordinary differential equations using similarity transformation. The transformed boundary layer equations are then solved numerically via bvp4c in MATLAB software. The effects of different values of radiation parameter and Hartmann number on the skin friction coefficient and local Nusselt number, velocity and temperature profiles are presented and discussed. The effect of radiation parameter and Hartmann number are also considered for both assisting and opposing flows. Dual solutions are found to exist in the opposing flow only, while for assisting flow, unique solution exists. It is also found that the radiation parameter enhances the boundary layer separation, and the Hartmann number delays the boundary layer separation.