Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Numerical Analysis of the Impact of Micro-ribs and Wavy Walls on the Performance of a Spiral-helical Mini-channel Heat Sink

Authors
1 Ph.D. Student, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran
2 Professor, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran
3 Ph.D. Student, Department of Mechanical Engineering, University of Kashan, Kashan, Iran
4 Assistant Professor, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran
Abstract
This study numerically investigates the hydrodynamic and thermal effects of adding hydrofoil micro-ribs and wavy walls to a spiral-helical mini-channel heat sink. Simulations were conducted using ANSYS Fluent software and the finite volume method, covering different configurations of the spiral-helical mini-channel with hydrofoil micro-ribs under laminar flow within a Reynolds number range of 831 to 1329. The results indicate that modifying the spiral-helical geometry slightly increases pressure drop while enhancing the average Nusselt number by up to 34.4%. The addition of hydrofoil micro-ribs and wavy walls further increases the average Nusselt number by up to 125.7% and improves overall performance by 69.8% compared to the simple helical geometry.
Keywords

Subjects


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  • Receive Date 19 September 2024
  • Revise Date 03 January 2025
  • Accept Date 07 January 2025