Laminar convective heat transfer in a microchannel with internal longitudinal fins

Foong, Andrew Jun Li; Ramesh, Namakkal G.; Chandratilleke, Tilak

doi:10.1016/j.ijthermalsci.2009.02.015

Cited by 63 publications

(24 citation statements)

References 11 publications

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“…Foong et al [22] used four longitudinal internal fins and analysed optimum fin height for heat transfer augmentation. Effects of geometric size of strip-fin were investigated by Hong et al [23].…”

Section: Introductionmentioning

confidence: 99%

Flow and heat transfer characteristics in convergent-divergent shaped microchannel with ribs and cavities

Srivastava¹,

Dewan²,

Bajpai³

2017

IJHT

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A computational study has been carried out to examine the effects of ribs and cavities on flow and heat transfer in a convergent-divergent shaped microchannel heat sink with constant heat flux for Reynolds number (Re) ranging from 120 to 900. Three-dimensional governing equations were discretized using the finite-volume method. The computational domain included solid silicon and fluid regions. A significant amount of work has been reported in the literature on the individual effects of channel shape and flow disruption using obstacles on thermal performance of microchannels. In the present study convergent-divergent (CD) shaped microchannel with and without ribs and cavities (RC) are considered and their friction coefficient, thermal resistance and maximum substrate temperature are investigated in detail. The present results show that the usage of CD shape with ribs and cavities can reduce the overall thermal resistance up to 40% and make the bottom surface temperature quite uniform. This heat transfer enhancement is mainly due to interruption and redevelopment of boundary-layers along with recirculation zone. The results also show that increasing Re leads to an enhanced heat transfer in terms of increased averaged Nusselt number from 15% to 46%. The combined effect of CD shape with RC is quite effective in heat transfer augmentation but it gradually loses its effectiveness at large values of Re due to a high pressure drop penalty.

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Section: Introductionmentioning

confidence: 99%

Flow and heat transfer characteristics in convergent-divergent shaped microchannel with ribs and cavities

Srivastava¹,

Dewan²,

Bajpai³

2017

IJHT

View full text Add to dashboard Cite

show abstract

“…Foong et al [18] and Liu et al [19] experimentally and numerically investigated the fluid flow and heat transfer characteristics in microchannel heat sink with longitudinal vortex generators (LVGs) and found that the microchannel heat sink with LVGs could enhance heat transfer but have larger pressure drop, compared with the smooth one.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of laminar flow and heat transfer in microchannel heat sink with offset ribs on sidewalls

Chai

Xia

Wang

2016

Applied Thermal Engineering

204

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“…The characteristic of deionized water flowing through micro heat sinks with complex structure has been reviewed by Xu et al [2], Zhai et al [3], Foong et al [4] and other authors. Xia et al [5] numerically investigated the characteristic of flow and heat transfer in microchannels with cavities and ribs.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer enhancement of Al2O3-H2O nanofluids flowing through a micro heat sink with complex structure

Zhai

Xia

Liu

et al. 2015

International Communications in Heat and Mass Transfer

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Laminar convective heat transfer in a microchannel with internal longitudinal fins

Cited by 63 publications

References 11 publications

Flow and heat transfer characteristics in convergent-divergent shaped microchannel with ribs and cavities

Flow and heat transfer characteristics in convergent-divergent shaped microchannel with ribs and cavities

Numerical study of laminar flow and heat transfer in microchannel heat sink with offset ribs on sidewalls

Heat transfer enhancement of Al2O3-H2O nanofluids flowing through a micro heat sink with complex structure

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