Topology optimization of a novel bionic fractal microchannel applied in thermal management of electronic components

Author:

Wang Yuwei1,Sun Liang1,Qi Cong1ORCID,Yu Jie1,Zhang Wenjie1

Affiliation:

1. School of Low‐Carbon Energy and Power Engineering China University of Mining and Technology Xuzhou 221116 China

Abstract

AbstractReducing energy consumption and improving device efficiency are important ways to realize efficient heat dissipation of microdevices, this paper developed a new bionic fractal microchannel heat sink based on fractal theory and topological optimization ideas, which introduced a binary flow stagnation zone optimization based on topological optimization ideas on the basic fractal microchannel. The thermal and hydraulic properties of a nanofluid in a fractal microchannel heat sink (FMCHS) have been numerically simulated with the fractal dimensions (fd = 1, 1.5, and 2) and Reynolds number (Re = 200–1600) as variables, and the comprehensive performance has been analyzed. The results showed that the introduction of the optimization increases the central velocity of the microchannel by 7.14–18.2%. With fractal dimensions of 1.5 and 2, the flow improvement and velocity increase are significant, and a significant Nusselt number improvement is obtained. The best comprehensive performance is obtained for FMCHS with a fractal dimension of 1.5, with an optimization effect of 8.3%.

Funder

Natural Science Research of Jiangsu Higher Education Institutions of China

Publisher

Wiley

Subject

Waste Management and Disposal,Renewable Energy, Sustainability and the Environment,General Chemical Engineering

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