Slip-flow and heat transfer of gaseous flows in the entrance of a wavy microchannel

Shokouhmand, Hossein; Bigham, Sajjad

doi:10.1016/j.icheatmasstransfer.2010.03.008

Cited by 21 publications

(7 citation statements)

References 11 publications

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“…Developing slip flow CWT heat transfer in wavy or constricted microchannels is analyzed in Refs. [91] and [92], respectively. The boundary conditions (4) and (11) take into account the thermal creep and significant viscous dissipation effects are observed.…”

Section: Microchannels With Other Kinds Of Cross-sectionsmentioning

confidence: 99%

Gas Microflows in the Slip Flow Regime: A Critical Review on Convective Heat Transfer

Colin

2011

Journal of Heat Transfer

131

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Accurate modeling of gas microvection is crucial for a lot of MEMS applications (microheat exchangers, pressure gauges, fluidic microactuators for active control of aerodynamic flows, mass flow and temperature microsensors, micropumps, and microsystems for mixing or separation for local gas analysis, mass spectrometers, vacuum, and dosing valves…). Gas flows in microsystems are often in the slip flow regime, characterized by a moderate rarefaction with a Knudsen number of the order of 10 À2 -10 À1 . In this regime, velocity slip and temperature jump at the walls play a major role in heat transfer. This paper presents a state of the art review on convective heat transfer in microchannels, focusing on rarefaction effects in the slip flow regime. Analytical and numerical models are compared for various microchannel geometries and heat transfer conditions (constant heat flux or constant wall temperature). The validity of simplifying assumptions is detailed and the role played by the kind of velocity slip and temperature jump boundary conditions is shown. The influence of specific effects, such as viscous dissipation, axial conduction and variable fluid properties is also discussed.

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Section: Microchannels With Other Kinds Of Cross-sectionsmentioning

confidence: 99%

Gas Microflows in the Slip Flow Regime: A Critical Review on Convective Heat Transfer

Colin

2011

Journal of Heat Transfer

131

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“…Considerable efforts have been devoted to simulate fluid flow and heat transfer in curved geometries [11,12]. In these problems, a transformation from physical space to computational space is introduced.…”

Section: Introductionmentioning

confidence: 99%

Two-phase flow numerical simulation and experimental verification of falling film evaporation on a horizontal tube bundle

Bigham

Kouhikamali

Abadi

2014

Desalination and Water Treatment

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In this study, a two-phase flow investigation on falling film evaporation phenomenon is described. To track liquid-vapor interface, the volume of fluid multiphase model based on the piecewise linear interface construction method in curvilinear coordinate is used. A finite volume method code based on the SIMPLE algorithm and non-orthogonal discretization grid system is used for solving the governing equations including continuity, energy, and Reynolds averaged Navier-Stokes equations with the k-ε turbulence model. Also, the energy and mass transfer during the phase change is taken into account. The effects of inlet mass flow rate and temperature difference between the tube temperature and the saturation temperature on the local and average heat transfer coefficient and the net vapor production are presented. Results show the average heat transfer coefficient increases/decreases by increasing in the inlet mass flow rate/the temperature difference at a constant temperature difference/inlet mass flow rate. Results also demonstrate at a constant value of DT= _ m f (MED-TVC design approach), as the inlet mass flow rate increases, the heat transfer coefficient may be decreased or increased. This increase or decrease depends on the values of DT= _ m f and ΔT.

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“…Shokouhmand and Bigham [83] investigated numerically the effects of Knudsen number and geometry on thermal and hydrodynamic characteristics of flow in the wavy microchannel at constant Reynolds number. The results reveal that the Nusselt number and C f .…”

Section: Numerical Studies On MCmentioning

confidence: 99%

Characteristics of heat transfer and fluid flow in microtube and microchannel using conventional fluids and nanofluids: A review

Salman

Mohammed

Munisamy

et al. 2013

Renewable and Sustainable Energy Reviews

164

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Slip-flow and heat transfer of gaseous flows in the entrance of a wavy microchannel

Cited by 21 publications

References 11 publications

Gas Microflows in the Slip Flow Regime: A Critical Review on Convective Heat Transfer

Gas Microflows in the Slip Flow Regime: A Critical Review on Convective Heat Transfer

Two-phase flow numerical simulation and experimental verification of falling film evaporation on a horizontal tube bundle

Characteristics of heat transfer and fluid flow in microtube and microchannel using conventional fluids and nanofluids: A review

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