Convective heat transfer enhancement by diamond shaped micro-protruded patterns for heat sinks: Thermal fluid dynamic investigation and novel optimization methodology. (25th January 2016)

• Record Type: Journal Article
• Authors: Ventola, Luigi; Dialameh, Masoud; Fasano, Matteo; Chiavazzo, Eliodoro; Asinari, Pietro
• Is Part Of: Applied thermal engineering. Volume 93(2016:Jan.)
• Page Start: 1254
• Page End: 1263
• Publication Date: 2016-01-25
• Subjects: Optimization of processes -- Convective heat transfer enhancement -- Electronics cooling -- Micro-protruded patterns -- Design of experiments; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2015.10.065
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: A novel methodology for optimal design of patterned heat sink surfaces is proposed. Heat transfer enhancement by patterned surfaces is measured experimentally. Role of fluid dynamics and geometrical scales on heat transfer is clarified. Abstract: In the present work, micro-protruded patterns on flush mounted heat sinks for convective heat transfer enhancement are investigated and a novel methodology for thermal optimization is proposed. Patterned heat sinks are experimentally characterized in fully turbulent regime, and the role played by geometrical parameters and fluid dynamic scales is discussed. A methodology specifically suited for micro-protruded pattern optimization is designed, leading to 73% enhancement in thermal performance respect to commercially available heat sinks, at fixed costs. This work is expected to introduce a new methodological approach for a more systematic and efficient development of solutions for electronics cooling.