Topology optimization for microchannel heat sinks with nanofluids using an Eulerian-Eulerian approach

Chen, Chih Hsiang; Yaji, Kentaro

International Journal of Heat and Mass Transfer, 2025, 243, 126870

Number of Access:288（2025-08-14 00:14 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/100975

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Title
Topology optimization for microchannel heat sinks with nanofluids using an Eulerian-Eulerian approach
Creator
CreatorName
Chen, Chih Hsiang
NRID
1000090779373 1000090779373
ORCID
0000-0002-4309-2043 0000-0002-4309-2043
researchmap permalink
yajiken0609 yajiken0609
Scopus Author ID
55787947500 55787947500
CreatorName
Yaji, Kentaro
Subject
Eulerian-Eulerian approach
Microchannel heat sink
Nanofluid
Topology optimization
Description
Chen C.H., Yaji K.. Topology optimization for microchannel heat sinks with nanofluids using an Eulerian-Eulerian approach. International Journal of Heat and Mass Transfer 243, 126870 (2025); https://doi.org/10.1016/j.ijheatmasstransfer.2025.126870.
Abstract
The demand for high-performance heat sinks has significantly increased with advancements in computing power and the miniaturization of electronic devices. Among the promising solutions, nanofluids have attracted considerable attention due to their superior thermal conductivity. However, designing a flow field that effectively utilizes nanofluids remains a challenge due to the complex interactions between fluid and nanoparticles. In this study, we propose a density-based topology optimization method for microchannel heat sink design using nanofluids. An Eulerian-Eulerian framework is utilized to simulate the behavior of nanofluids, and the optimization problem aims to maximize heat transfer performance under a fixed pressure drop. In numerical examples, we investigate the dependence of the optimized configuration on various parameters and apply the method to the design of a manifold microchannel heat sink. The parametric study reveals that the number of flow branches increases with increasing pressure drop and decreasing particle volume fraction. In the heat sink design, the topology-optimized flow field achieves an 11.4% improvement in heat transfer performance compared to a conventional parallel flow field under identical nanofluid conditions. The numerical investigations indicate this improvement increases with higher pressure drops and volumetric heat generation rates.
Publisher
Elsevier Ltd
Source Title
International Journal of Heat and Mass Transfer
Volume (Issue)
243
Page
126870
Date of Issued
2025-06-15
Language
English
Handle URL
https://hdl.handle.net/11094/100975
PISSN
00179310
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.ijheatmasstransfer.2025.126870
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
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Category
学術雑誌論文 Journal Article