Dynamic instabilities of flow boiling in micro-channels: A review

Wang, Biao; Hu, Yanwei; He, Yaning; Rodionov, N. B.; Zhu, Jiaqi

doi:10.1016/j.applthermaleng.2022.118773

Cited by 52 publications

(6 citation statements)

References 190 publications

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“…As an efficient cooling technology, it has many advantages such as an extremely high heat transfer performance, better axial temperature uniformity, and lower pumping power consumption. Due to the presence of latent heat, flow boiling with phase change heat transfer is superior to natural convection and single-phase forced convection under high heat flux conditions [ 133 , 134 ]. In traditional channels, boiling heat transfer is dominated by two mechanisms: nuclear boiling and convective boiling.…”

Section: Flow and Heat Transfer Mechanisms Under The Coupling Effect ...mentioning

confidence: 99%

“…Instabilities in microchannels can lead to problems such as vibrations, system control problems, and thermal fatigue and in extreme cases may even be responsible for surface burnout. Therefore, the study of two-phase flow instabilities is very important for the design and operation of microchannel heat transfer systems [ 134 ]. Ledinegg performed the first analysis of two-phase offset instability in 1938 [ 148 ].…”

Section: Flow and Heat Transfer Mechanisms Under The Coupling Effect ...mentioning

confidence: 99%

“…Thermal oscillations are not an independent mode of oscillation, while the effect of acoustic oscillations is generally weak. Therefore, researchers have focused more on the other three instability modes [ 134 ]. Lee et al [ 170 ] investigated the flow instability caused by pressure oscillation in the saturated boiling region.…”

Section: Flow and Heat Transfer Mechanisms Under The Coupling Effect ...mentioning

confidence: 99%

“… The dynamic process of bubble development in microchannels [ 134 ]. Reprinted with permission from Ref.…”

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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A Review of the Complex Flow and Heat Transfer Characteristics in Microchannels

Zhang

Zou

2023

Micromachines

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Continuously improving heat transfer efficiency is one of the important goals in the field of energy. Compact heat exchangers characterized by microscale flow and heat transfer have successfully provided solutions for this purpose. However, as the characteristic scale of the channels decreases, the flow and heat transfer characteristics may differ from those at the conventional scale. When considering the influence of scale effects and changes in special fluid properties, the flow and heat transfer process becomes more complex. The conclusions of the relevant studies have not been unified, and there are even disagreements on some aspects. Therefore, further research is needed to obtain a sufficient understanding of flow structure and heat transfer mechanisms in microchannels. This article systematically reviews the research about microscale flow and heat transfer, focusing on the flow and heat transfer mechanisms in microchannels, which is elaborated in the following two perspectives: one is the microscale single-phase flow and heat transfer that only considers the influence of scale effects, the other is the special heat transfer phenomena brought about by the coupling of microscale flow with special fluids (fluid with phase change (pseudophase change)). The microscale flow and heat transfer mechanisms under the influence of multiple factors, including scale effects (such as rarefaction, surface roughness, axial heat conduction, and compressibility) and special fluids, are investigated, which can meet the specific needs for the design of various microscale heat exchangers.

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Section: Flow and Heat Transfer Mechanisms Under The Coupling Effect ...mentioning

confidence: 99%

Section: Flow and Heat Transfer Mechanisms Under The Coupling Effect ...mentioning

confidence: 99%