Paper Details

Name: Ashwini.G
Country: India

Year: 2025
Volume: Volume No: 12, Issue No: 2, Year: 2025 (Specials Issue -2)
Page Number: 10-18
DOI: https://doi.org/10.5281/zenodo.17921233

BSTRACT:
The effect of thermal stratification on unsteady mixed convection flow and heat transfer of an
incompressible electrically conducting fluid adjacent to a vertical flat surface has been
studied in the presence of a transverse magnetic field. The nonlinear governing equations and
their associated boundary conditions are initially changed into dimensionless forms by
pseudo - similarity variables. The resulting system of equations is then solved numerically
using the Keller-box method. The numerical results obtained are compared for steady case
with the previously published results and are found to be in good agreement. Further in this
study, the effect of stratification parameter and unsteady parameter on local skin friction and
heat transfer coefficients in the regime of buoyancy assisting flow are discussed. An analysis
of the results obtained shows that the flow field is influenced appreciably by unsteady
parameter and thermal stratification parameter. Also, it is found that thermal
stratification ( ) causes considerable undershoot in the temperature profiles.
Keywords: Unsteady, MHD, Mixed convection, Stratified medium, Skin friction, Heat
transfer