Abstract: This research paper investigates the effects of Thermophoresis and Brownian motion parameter variation on heat and mass transfer on MHD nanofluid flow in a parabolic thermal solar collector. The effect of laminar flow which is occasioned by a variation in the Brownian motion and Thermophoresis parameter over a parabolic shaped photovoltaic surface has been investigated numerically. The model used for the nanofluid flow incorporates the effects of Brownian motion and thermophoresis parameter variation with thermal variation due to solar radiation in the presence of an induced magnetic field cutting perpendicular across the flow. The governing equations of the MHD fluid flow are presented and solved using the finite element method. The results show that increasing the Thermophoresis and Brownian motion parameters lead to an increase in heat transfer and a decrease in mass transfer. Similarly, an increase in the Peclet number favors mass transfer but impairs heat transfer. A comparison of the results with existing literature has been done and a remarkable agreement established. Keywords: Brownian Motion, Concentration Boundary Layer, Heat Transfer, Mass Transfer, Magneto-Hydrodynamics (MHD), Nanofluid, Photovoltaic Solar Collector, Thermal Boundary Layer, Thermophoresis, Velocity Boundary Layer. Title: EFFECTS OF BROWNIAN MOTION AND THERMOPHORESIS VARIATION ON MHD NANOFLUID 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: 25-37 Novelty Journals Website: www.noveltyjournals.com Published Date: 06-April-2023 DOI: https://doi.org/10.5281/zenodo.7804696 Paper Download Link (Source) https://www.noveltyjournals.com/upload/paper/EFFECTS%20OF%20BROWNIAN%20MOTION-06042023-2.pdf

International Journal of Novel Research in Physics Chemistry & Mathematics, ISSN 2394-9651, Novelty Journals, Website: www.noveltyjournals.com