Analyzing flow and thermal behavior in laminar mixed convection: Effects of rotating cylinder located at various side walls
Year: 2025
Type: article
Abstract: The present study numerically investigates laminar mixed convection in a square enclosure with a rotating cylinder mounted on different sidewalls. The effect of the cylinder angular speeds defined by Re number for a wide range of (100 ≤ Re ≤ 1200) and Grashoft number of (7x103 ≤ Gr ≤ 4.9x104) and the effect of the cylinder radius R0, on the heat transfer characteristics are considered. The suggested geometry is a square cavity with a bottom wall that is immobile and heated to a temperature of Th and with rotating cylinders mounted at different sidewalls and maintained to cold temperature Tc. Remaining walls are considered adiabatic. Results revealed that flow patterns and thermal performance are directly affected by the placement location of both, the chosen heated wall and the rotating cylinder. From the four investigated geometrical models, case A (cold cylinder located at the top wall of the cavity + cavity left wall heated), was found to be the best performing geometrical model in the range of the investigated flow and thermal parameters. It is found also that increasing the rotating cylinder radius R0 leads to an enhanced heat transfer rate.
Authors: Abdelkader FILALI, Farid BERRAHIL, Hamza SEMMARI, Abdellatif M. SADEQ, Independent Researcher, Mechanical Engineering, Doha, Qatar
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4414515871