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

Chen, Chih Hsiang; Yaji, Kentaro

doi:https://doi.org/10.1016/j.ijheatmasstransfer.2025.126870

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

アクセス数:335件（2025-11-19 01:40 集計）

固定URL: https://hdl.handle.net/11094/100975

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タイトル	Topology optimization for microchannel heat sinks with nanofluids using an Eulerian-Eulerian approach
著者	著者名 Chen, Chih Hsiang
著者	NRID 1000090779373 1000090779373 ORCID 0000-0002-4309-2043 0000-0002-4309-2043 researchmap permalink yajiken0609 yajiken0609 Scopus Author ID 55787947500 55787947500 著者名 Yaji, Kentaro
キーワード等	Eulerian-Eulerian approach
	Microchannel heat sink
	Nanofluid
	Topology optimization
内容	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.
抄録	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.
出版者	Elsevier Ltd
収録物名	International Journal of Heat and Mass Transfer
巻(号)	243
ページ	126870
刊行年月	2025-06-15
言語	英語
ハンドルURL	https://hdl.handle.net/11094/100975
PISSN	00179310
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1016/j.ijheatmasstransfer.2025.126870
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCTERMS.bibliographicCitation	International Journal of Heat and Mass Transfer. 2025, 243, p. 126870
DC.title	Topology optimization for microchannel heat sinks with nanofluids using an Eulerian-Eulerian approach
DC.creator	Chen, Chih Hsiang
DC.creator	Yaji, Kentaro
DC.publisher	Elsevier Ltd
DC.language' scheme='DCTERMS.RFC1766	英語
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-06-15
DC.identifier	https://doi.org/10.1016/j.ijheatmasstransfer.2025.126870
DC.subject	Eulerian-Eulerian approach
	Microchannel heat sink
	Nanofluid
	Topology optimization
DC.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.
DCTERMS.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.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	100975
citation_title	Topology optimization for microchannel heat sinks with nanofluids using an Eulerian-Eulerian approach
citation_author	Chen, Chih Hsiang
citation_author	Yaji, Kentaro
citation_publisher	Elsevier Ltd
citation_language	英語
citation_date	2025-06-15
citation_journal_title	International Journal of Heat and Mass Transfer
citation_volume	243
citation_firstpage	126870
citation_doi	https://doi.org/10.1016/j.ijheatmasstransfer.2025.126870
citation_public_url	https://hdl.handle.net/11094/100975

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

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