Akademik Veri Yönetim Sistemi
JOURNAL OF ENGINEERING THERMOPHYSICS, cilt.34, sa.4, ss.857-881, 2025 (SCI-Expanded, Scopus)
In this work, the transfer of heat and characteristic of flow in semi-circular grooved finless, double and triple semi-circular grooved finned channels were researched numerically by comparing them with the straight channel. Using the Ansys-Fluent computer program, numerical analysis was performed by solving the conservation equations under steady, two-dimensional and laminar flow conditions. To better direct the flow to the lower surfaces of corrugated channels with constant surface temperature, the fins were positioned between the grooves at the top surface of the duct at angles of 30°, 60°, and 90° (θ) with the horizontal and at different heights of 3, 6, and 9 mm (z). The outcomes of the work were searched as variations in the mean Nu number (Num corrugated ch/Num straight ch., mean surface temperature (Tsm corrugated ch/Tsm straight ch) and performance evaluation criteria (PEC), taking into account the effects of fin angles and heights for all the semi-circular grooved channels employing water and diamond–water nanofluid. The study’s outcomes were checked against both the numerical outcomes and, the analytical equation of the work in the literature giving the mean Nu number (Num) under the condition of flow of laminar. The outcomes illustrated that increasing the fin height (z) from 3 to 9 mm for Re = 600 in the double semi-circular grooved duct with a 60° fin angle provides the (Num corrugated ch/Num straight ch rate increase by 11.99%. Moreover, for Re = 1000, the PEC value of the triple semi-circular corrugated channel with θ = 90° and z = 9 mm fins and nanofluid is 5.15% higher than that of the double corrugated finned channel.