Heat Exchange Phenomena of Ag–GO Hybrid Nanofluid in a Rotating Porous Medium under MHD, Thermal Radiation, and Joule Heating

This research investigates the magnetohydrodynamic (MHD) flow and thermal transport characteristics of a silver–graphene oxide (Ag–GO) composite nanofluid within a rotating arrangement formed by a pair of parallel plates. The working fluid consists of a 50:50 water–ethylene glycol combination. The mathematical formulation includes heat radiation, Joule heating, and Darcy resistance to represent porous medium influences, while both the upper and lower plates are assumed to be permeable and stretchable, respectively. Appropriate similarity transformations transform the governing coupled nonlinear ordinary differential equations into dimensionless form, and the resulting equations are solved numerically using the MATLAB bvp4c technique. The effects of several important parameters, including Darcy number, magnetic parameter, rotation parameter, suction/blowing parameter, radiation parameter, Reynolds number, and nanoparticle volume fraction, are examined in detail. The findings reveal that higher Darcy resistance reduces fluid velocity while increasing temperature distribution. Furthermore, the incorporation of Ag–GO nanoparticles considerably enhances thermal performance. The Nusselt number rises with greater nanoparticle concentration and fluid injection, whereas it declines as porous resistance increases. Keywords: Hybrid Nanofluid (HNF), Heat Transfer, Rotating System, Magnetohydrodynamics (MHD), Thermal Conductivity, Joule Heating. Title: Heat Exchange Phenomena of Ag–GO Hybrid Nanofluid in a Rotating Porous Medium under MHD, Thermal Radiation, and Joule Heating Author: C Sulochana, Nityanand International Journal of Novel Research in Engineering and Science ISSN 2394-7349 Vol. 13, Issue 1, March 2026 - August 2026 Page No: 24-37 Novelty Journals Website: www.noveltyjournals.com Published Date: 02-June-2026 DOI: https://doi.org/10.5281/zenodo.20508593 Paper Download Link (Source) https://www.noveltyjournals.com/upload/paper/Heat%20Exchange%20Phenomena-02062026-3.pdf