Fluid Dynamic and Thermal Performance of a V-Shape Slotted Cylinder

Abdulwahab Alhashem (), Sultan Alshareef, Ali Y. Alharbi and Mosab A. Alrahmani
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Abdulwahab Alhashem: Department of Mechanical Power & Refrigeration Technology, College of Technological Studies, The Public Authority for Applied Education and Training, Kuwait City 70654, Kuwait
Sultan Alshareef: Department of Mechanical Power & Refrigeration Technology, College of Technological Studies, The Public Authority for Applied Education and Training, Kuwait City 70654, Kuwait
Ali Y. Alharbi: Department of Mechanical Power & Refrigeration Technology, College of Technological Studies, The Public Authority for Applied Education and Training, Kuwait City 70654, Kuwait
Mosab A. Alrahmani: Department of Mechanical Power & Refrigeration Technology, College of Technological Studies, The Public Authority for Applied Education and Training, Kuwait City 70654, Kuwait

Energies, 2024, vol. 17, issue 23, 1-18

Abstract: The flow characteristics and thermal performance of circular cylinders with V-shape slots are investigated numerically. The simulation is a two-dimensional incompressible flow that employs the semi-implicit finite volume multi-material algorithm MPM-ICE, which is a module of the Uintah framework. The normalized slot width s 2 / D ranges from 0.1 to 0.2, and the corresponding increases in total surface area are from ~99% to ~70%, respectively. Compared to the solid cylinder, the slotted cylinder has the largest total drag reduction of ~67% at s 2 / D of 0.2. Meanwhile, although the heat transfer is proportional with the surface area, the thermal performance of the V-shape slot first improves with the slot width, and then declines. The heat transfer improvement has an optimum value of ~192% at s 2 / D of 0.15. The overall slot performance, defined by the ratio of the heat transfer to the drag force, is best at 0.175.

Keywords: pin fin; fin thermal performance; slotted fin; heat sink; air cooled; forced convection (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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