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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Abdulwahab Alhashem & Sultan Alshareef & Ali Y. Alharbi & Mosab A. Alrahmani, 2024. "Fluid Dynamic and Thermal Performance of a V-Shape Slotted Cylinder," Energies, MDPI, vol. 17(23), pages 1-18, December.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:23:p:6192-:d:1539370
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