Modeling and Simulation of a Nanofluid-Cooled Microchannel Sawtooth Cooling Device

Authors

  • Shugata Ahmed Departmental of Robotics and Mechatronics Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka 1000, Bangladesh
  • Muhammad Hasibul Hasan Departmental of Mechanical and Industrial Engineering, Faculty of Engineering and Architectural Science Ryerson University, Canada

DOI:

https://doi.org/10.3329/dujs.v74i1.84622

Keywords:

Microchannel sawtooth cooling device, microchannel heat sink, Nanofluids

Abstract

The purpose of this paper is to numerically investigate the heat transfer and pressure drop characteristics of a microchannel sawtooth cooling device for Al₂O₃-water, CuO-water, and TiO₂-water nanofluid coolants. Results are compared with rectangular single-layer microchannel heat sinks (SL-MCHS) and double-layer microchannel heat sinks (DL-MCHS) of the same geometrical features. Numerical simulation has been carried out by the commercial software FLUENT 14.5 release. Governing equations are solved by the finite volume method. The pressure-velocity coupling equation is solved using the Semi-Implicit Method for Pressure Linked Equations (SIMPLE) algorithm. The thermal resistance of the microchannel sawtooth cooling device is lower than SL-MCHS and DL-MCHS. Thermal resistance of the heat sink is influenced by the volume fraction of nanoparticles, geometrical parameters, and pumping power.

Dhaka Univ. J. Sci. 74(1): 62-68, 2026 (January)

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Author Biographies

Shugata Ahmed, Departmental of Robotics and Mechatronics Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka 1000, Bangladesh

 

 

Muhammad Hasibul Hasan, Departmental of Mechanical and Industrial Engineering, Faculty of Engineering and Architectural Science Ryerson University, Canada

 

 

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Published

2026-01-28

How to Cite

Ahmed, S., & Hasan, M. H. (2026). Modeling and Simulation of a Nanofluid-Cooled Microchannel Sawtooth Cooling Device. Dhaka University Journal of Science, 74(1), 62–68. https://doi.org/10.3329/dujs.v74i1.84622

Issue

Vol. 74 No. 1 (2026)

Section

Articles