1Associate Professor, Department of Mechanical Engineering, Wolaita Sodo University, Ethiopia
2Dean, College of Engineering, Wolaita Sodo University, Ethiopia
3Head, Department of Mechanical Engineering, Wolaita Sodo University, Ethiopia
*Author correspondence: Dr. David Santosh Christopher Associate Professor, Department of Mechanical Engineering, Wolaita Sodo University, Ethiopia
Online published on 15 September, 2023.
The present work aims to augment the thermal performance of rectangular duct by implementing square rib in test section and consuming hybrid-nanofluids such as Al2O3 -CuO as a working fluid. The investigation outcome is compared with base fluid (water) to ascertain the enhancement of heat transfer rate. A parameter consider for the research is average Nusselt number, friction factor and velocity of fluid assumed in the range of Reynolds number 5000 - 15000. The RNG-turbulent model was selected for the investigation to validate the convective heat transfer achieved closer to the top wall. The characteristic of heat transfer and pressure drop of fluid flow inside the rectangular duct are identified by contour results of turbulent kinematic energy and intensity, static pressure, velocity. The result reveals that 14% of advancement of Nusselt number were recorded in hybrid nanofluid than base fluid with a nominal friction factor.
Rectangular duct, Al2o3- CuO, Nusselt number, Friction factor
