EFFECTS OF REYNOLDS NUMBER VARIATION ON HEAT AND MASS TRANSFER FOR MHD FLOW IN A CONCENTRATED PARABOLIC THERMAL SOLAR COLLECTOR

Abstract: The paper analyzes the effects of the Reynolds number variation on mixed convective heat and mass transfer over a parabolic surface under a radial magnetic field cutting perpendicular along the fluid flow in presence of a constant radiation heat source. The governing partial differential equations are transformed into a system of ordinary differential equation using non-dimensional numbers. The resulting system of ordinary differential equations together with the boundary equations are then solved numerically by finite difference method and simulated using MATLAB to obtain the profiles of the flow variables. The influence of thermal Grashof number ( ), Mass Grashof number ( ), and Magnetic Parameter ( ) on the flow velocity, temperature and concentration profiles are displayed in graphs for different values of the fluid parameters entering into the control volume numerically discussed and conclude. The study concludes that increasing the Reynolds number results to a reduction in heat and mass transfer and impairs the motion of the nanofluid. An increase in the Grashof number ( ), Mass Grashof number ( ) results to an increase in the flow velocity which negatively impairs the mixing and heat exchange in the nanofluid thus resulting to a decrease in heat and mass transfer. Increasing the Magnetic Parameter ( ) leads to an increase in the resistance to the flow of the nanofluid thus reducing the fluid velocity. However, the resistance favors heat and mass transfer as enough time is given for heat exchange and mixing to take place.

Keywords: Concentration Boundary Layer, Heat Transfer, Mass Transfer, Magneto-Hydrodynamics (MHD), Nanofluid, Photovoltaic Solar Collector, Thermal Boundary Layer, Velocity Boundary Layer.

Title: EFFECTS OF REYNOLDS NUMBER VARIATION ON HEAT AND MASS TRANSFER FOR MHD FLOW IN A CONCENTRATED PARABOLIC THERMAL SOLAR COLLECTOR

Author: Lucas Khaoya Mukwabi, Dr. Mark Kimathi, Dr. Charles Muli

International Journal of Novel Research in Physics Chemistry & Mathematics

ISSN 2394-9651

Vol. 10, Issue 1, January 2023 - April 2023

Page No: 38-51

Novelty Journals

Website: www.noveltyjournals.com

Published Date: 06-April-2023

DOI: https://doi.org/10.5281/zenodo.7805386

Paper Download Link (Source)

https://www.noveltyjournals.com/upload/paper/EFFECTS%20OF%20REYNOLDS%20NUMBER%20VARIATION-06042023-4.pdf