Tailoring the fluid flow distribution in a parallel mini-channel heat sink under multiple-peak heat flux

Li, Yijun; Roux, Stéphane; Castlain, Cathy; Fan, Yilin

doi:10.1016/j.tsep.2021.101182

Cited by 6 publications

(5 citation statements)

References 37 publications

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“…Kumar and Singh [94] emphasized the importance of aligning the flow arrangement and actual flow distribution with the heat flux shape to achieve lowered peak temperature and thermal resistance. Li et al [99] optimized the channel inlet sizes of parallel mini-channel heat sinks under a non-uniform multiple-peak heat flux. The flow distribution was tailored step by step according to the temperature distribution on the heating surface, resulting in reduced peak temperature.…”

Section: Flow Distribution Investigation/optimization On Parallel Str...mentioning

confidence: 99%

“…However, the majority of the mentioned TO studies deal with simplified 2D or pseudo-3D design domains (e.g., [150]). Among studies with 3D parametrization (e.g., [151,152]), most are performed under uniform heating conditions, with only a few exceptions addressing more complex but realistic heating boundaries involving multiple heat sources [153,154] or shifted thermal loads [155]. Notably, Li et al [154] developed a GA-based TO method (GATO) for convective cooling of a heating surface with multiple heat sources.…”

Section: Topology Optimization (To) Of Global Flow Configurationmentioning

confidence: 99%

“…Among studies with 3D parametrization (e.g., [151,152]), most are performed under uniform heating conditions, with only a few exceptions addressing more complex but realistic heating boundaries involving multiple heat sources [153,154] or shifted thermal loads [155]. Notably, Li et al [154] developed a GA-based TO method (GATO) for convective cooling of a heating surface with multiple heat sources. The design domain was represented as a binary matrix, where each element was considered either as fluid or as solid.…”

Section: Topology Optimization (To) Of Global Flow Configurationmentioning

confidence: 99%

See 2 more Smart Citations

Design and Optimization of Heat Sinks for the Liquid Cooling of Electronics with Multiple Heat Sources: A Literature Review

Li,

Roux,

Castelain

et al. 2023

Energies

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This paper presents a detailed literature review on the thermal management issue faced by electronic devices, particularly concerning uneven heating and overheating problems. Special focus is given to the design and structural optimization of heat sinks for efficient single-phase liquid cooling. Firstly, the paper highlights the common presence and detrimental consequences of electronics overheating resulting from multiple heat sources, supported by various illustrative examples. Subsequently, the emphasis is placed on single-phase liquid cooling as one of the effective thermal management technologies for power electronics, as well as on the enhancement of heat transfer in micro/mini channel heat sinks. Various studies on the design and structural optimization of heat sinks are then analyzed and categorized into five main areas: (1) optimization of channel cross-section shape, (2) optimization of channel flow passage, (3) flow distribution optimization for parallel straight channel heat sinks, (4) optimization of pin-fin shape and arrangement, and (5) topology optimization of global flow configuration. After presenting a broad and complete overview of the state of the art, the paper concludes with a critical analysis of the methods and results from the literature and highlights the research perspectives and challenges in the field. It is shown that the issue of uneven and overheating caused by multiple heat sources, which is commonly observed in modern electronics, has received less attention in the literature compared to uniform or single-peak heating. While several design and structural optimization techniques have been implemented to enhance the cooling performance of heat sinks, topology optimization has experienced significant advancements in recent years and appears to be the most promising technology due to its highest degree of freedom to treat the uneven heating problem. This paper can serve as an essential reference contributing to the development of liquid-cooling heat sinks for efficient thermal management of electronics.

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Section: Flow Distribution Investigation/optimization On Parallel Str...mentioning

confidence: 99%

Section: Topology Optimization (To) Of Global Flow Configurationmentioning

confidence: 99%

Section: Topology Optimization (To) Of Global Flow Configurationmentioning

confidence: 99%

See 1 more Smart Citation

Design and Optimization of Heat Sinks for the Liquid Cooling of Electronics with Multiple Heat Sources: A Literature Review

Li,

Roux,

Castelain

et al. 2023

Energies

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“…in chemical engineering when designing a reaction in a reactor 8 or in cooling electronics where heterogeneous heat flux on the surface can be encountered 9 ) where non-uniform distribution is used intentionally to improve the overall performance of the device. Li et al 10 showed that the flow in parallel minichannel heat sinks can be tailored (different mass flow rates in every channel) to eliminate the temperature hotspots when non-uniform multiple-peak heat flux occurs. Hence, the flow maldistribution (“bad/incorrect/wrongful” distribution) does not necessarily mean non-uniform distribution and at the same time, the non-uniformly distributed flow is not always a maldistribution.…”

Section: Introductionmentioning

confidence: 99%

Comparison of various flow maldistribution quantification methods in mini heat exchangers

Dąbrowski

2023

Sci Rep

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The aim of study is to compare various flow maldistribution quantification methods, using velocity, mass flow rate, pressure, and temperature. An experimentally validated numerical study has been prepared and a heat exchanger with 34 semi-circular channels with a diameter of 3.1 mm has been tested. The minichannels were heated from the bottom with a heat flux of 50, 60, 70, and 80 kW/m2. The cases for various inlet velocities of 0.1, 0.2, 0.3, and 0.4 m/s have been tested. It results in a total of 16 cases with various heat flux and various inlet velocities of the water. Then, for every 16 cases, the flow maldistribution coefficients, widely used in the literature, have been calculated based on the velocity, pressure, and temperature profiles. The study shows that every method gives other results of the same parameter that should define the flow distribution in the heat exchanger in the same way. Hence, the ambiguities of fluid distribution conclusions in heat exchangers that can be found in the literature may be caused by a different interpretation of the flow maldistribution coefficient. A normalized flow maldistribution coefficient that gives the same results for all thermohydraulic parameters used has been proposed.

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“…The objective is to increase their overall performance. The key points are the intensification of heat transfer on the one hand, and the optimized management of fluid flows on the other hand, at each structural and temporary scale [6]- [9]. Therefore, how to improve the thermal performance of HXs has long been a hot topic in the research community of energy engineering.…”

Section: Introductionmentioning

confidence: 99%

Topology optimization of heat exchangers: A review

Fawaz

Younan

Corre

et al. 2022

Energy

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Tailoring the fluid flow distribution in a parallel mini-channel heat sink under multiple-peak heat flux

Cited by 6 publications

References 37 publications

Design and Optimization of Heat Sinks for the Liquid Cooling of Electronics with Multiple Heat Sources: A Literature Review

Design and Optimization of Heat Sinks for the Liquid Cooling of Electronics with Multiple Heat Sources: A Literature Review

Comparison of various flow maldistribution quantification methods in mini heat exchangers

Topology optimization of heat exchangers: A review

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