Experimental and numerical studies of liquid flow and heat transfer in microtubes

Li, Zhuo; He, Ya‐Ling; Tang, G.H.; Tao, Wen‐Quan

doi:10.1016/j.ijheatmasstransfer.2007.01.016

Cited by 128 publications

(69 citation statements)

References 31 publications

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“…Large roughness of the micro-channel causes high friction factor [12][13]. The convective heat transfer rate can be enhanced by varying boundary conditions, geometry, or by enhancement of thermal conductivity of the fluid [14]. Nowadays nano particles are used for the enhancement of heat transfer rates but they also rises presuree drop [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of Heat Transfer and Fluid Flow in Micro-Channel Heat Sink

Sharma¹,

SinghGill²,

Dhawan³

2016

IJMECH

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Section: Introductionmentioning

confidence: 99%

Experimental Analysis of Heat Transfer and Fluid Flow in Micro-Channel Heat Sink

Sharma¹,

SinghGill²,

Dhawan³

2016

IJMECH

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“…To address this shortcoming in the definition of parameter M (or ), as defined by Maranzana et al [36], Li et al [32], and later Zhang et al [68], incorporated the effect of individual temperature differences between the inlet and outlet locations in the solid substrate (T s ) as well as in fluid (T f ) domain. The conduction number, as revised by Li et al [32], is given by…”

Section: Axial Back Conduction In Micro-sized Channelsmentioning

confidence: 99%

“…8, the conclusions are only partly correct; Koşar [26] did not capture the full spectrum of k s to get its optimum value. Similarly, Li et al [32] both experimentally and numerically studied conjugate effects on microtubes of fused silica and stainless steel but failed to capture the complete range of the effect of solid substrate on the variation of Nusselt number, as has been discussed in Sect. 8.…”

Section: Summary and Closurementioning

confidence: 99%

Axial Back Conduction through Channel Walls During Internal Convective Microchannel Flows

Khandekar

Moharana

2015

Springer Tracts in Mechanical Engineering

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Recent developments during the last decade in the field of manufacturing and development of many high-power mini-/micro-devices led to increased interest in microfluidic devices involving heat transfer. Since the pioneering work by Tuckerman and Pease (IEEE Electron Device Lett 2:126-129, 1981) on the use of microchannels for high heat flux removal, certainly a lot of developments has been witnessed through ever-increasing analytical, experimental, and highly sophisticated numerical studies by many researchers across the globe. In spite of this progress, many fundamental understandings of flow and heat transfer phenomena in mini-/microchannel systems are still obscure. One such phenomenon is the flow of heat in the solid wall of microchannel systems by means of conduction normally in a direction opposite to that of internal convective mini-/microchannel flow of fluid, called "axial wall conduction" or "axial back conduction." Axial back conduction is not a new phenomenon, rather mostly neglected unintentionally because of its convincingly smaller influence on heat transfer in conventional-size channels. As the hydraulic diameter of a channel decreases, the coupling between the substrate and bulk fluid temperatures becomes significant because of the relative size of the fluid to the solid wall. Unlike in conventional-size channels, negligence of axial back conduction along the solid walls of micro heat exchangers frequently leads to erroneous conclusions and inconsistencies in the interpretation of transport data. Thus, it is important to explicitly identify the thermofluidic parameters of interest which lead to a distortion in the boundary conditions and thus the true estimation of species transfer coefficients. In this chapter, we focus our attention on the axial back conduction in the solid substrate/channel wall as against the axial back conduction in the liquid flow domain; thus, a detailed review of the state-of-the-art on axial back conduction in both conventional as well as mini-/microchannel systems is presented.

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“…There are many parameters, which should be included when investigating convective heat transfer in microchannels such as size effect, rarefaction effect, surface roughness, axial heat conduction, surface geometry, and used coolants [3].…”

Section: Introductionmentioning

confidence: 99%

Pressure drop and heat transfer characteristics of nanofluids in horizontal microtubes under thermally developing flow conditions

Karimzadehkhouei

Yalcin

Şendur

et al. 2015

Experimental Thermal and Fluid Science

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Experimental and numerical studies of liquid flow and heat transfer in microtubes

Cited by 128 publications

References 31 publications

Experimental Analysis of Heat Transfer and Fluid Flow in Micro-Channel Heat Sink

Experimental Analysis of Heat Transfer and Fluid Flow in Micro-Channel Heat Sink

Axial Back Conduction through Channel Walls During Internal Convective Microchannel Flows

Pressure drop and heat transfer characteristics of nanofluids in horizontal microtubes under thermally developing flow conditions

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