Numerical study of heat transfer enhancement in parallel-plate channels with rotating baffles

The present work aims to improve the heat transfer rate in a rectangular channel. To improve the dynamic and thermal characteristics, a deflector is inserted on the axis of the thermal channel. The inclination angles of the deflector are taken into account, α = 90°, 70°, 50° and 30°.H2 gas, which has high thermal conductivity, used to significantly improve the overall thermal performance of various types of thermal equipment. The average Nusselt number is improved by the angle of inclination of the deflector (α = 90°). The Nusselt number (Nu) also increases the temperature difference between the wall surface and the H2 gas, resulting in good cooling for different Reynolds numbers, Re = 5000, 10000, 15000, 20000 and 25000.