Investigation of heat transfer characteristics in MHD hybrid nanofluids with variable viscosity and thermal radiations
Muhammad Shoaib Anwar, Mumtaz Khan, Zakir Hussain, Taseer Muhammad, V. Puneeth
Abstract
This study provides a comprehensive analysis of heat transfer and flow dynamics in magnetohydrodynamic (MHD) hybrid nanofluids. The investigation focuses on aluminum-silver, aluminum-copper, and silver-copper hybrid nanofluids, examining key factors such as variable viscosity and physiochemical properties under the influence of magnetic field. Moreover the impacts of thermal radiations and heat sink/source are also considered in the flow domain. Employing Marangoni boundary conditions, the governing equations were solved using the 4th-order Runge-Kutta method combined with a shooting technique. The results reveal the significant impact of magnetic and thermal parameters on temperature gradients and velocity fields. Specifically, localized temperature increases at the boundary layer enhance thermal efficiency by 2.65% under magnetic field intensity, 19.06% with radiation, and decrease by 10.62% with variations in Prandtl number. These findings underscore the substantial potential of hybrid nanofluids in optimizing heat transfer performance, particularly in energy systems.