Analytical closed-form solution for fluid flow through microchannel heat sinks including axial conduction

Mitra, Imon; Ghosh, Indranil

doi:10.1016/j.icheatmasstransfer.2021.105732

Cited by 7 publications

(3 citation statements)

References 34 publications

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“…For the uniformly heated single-phase heat transfer, the wall temperature distribution shows a nonlinear change and deviates from the linear change rule of the ideal condition when the axial heat conduction has a significant impact. If axial heat conduction dominates, the nonlinear distribution of solid and fluid temperatures in the microchannel will become more pronounced [ 102 ]. Applying a uniform heat flux to the microchannel does not guarantee a uniform transfer of heat to the fluid.…”

Section: Flow and Heat Transfer Mechanism Of Single-phase Fluid Under...mentioning

confidence: 99%

“… Axial conduction induced drift in the wall (θ) and fluid (θf) temperature profiles as a function of (x/L): ( a ) steel and ( b ) copper channels for different wall thicknesses [ 102 ]. 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 Mechanism Of Single-phase Fluid Under...mentioning

confidence: 99%

Section: Figurementioning

confidence: 99%