A superposition approach to study slip-flow forced convection in straight microchannels of uniform but arbitrary cross-section

This work presents a superposition approach to investigate forced convection in microducts of arbitrary cross-section, subject to H1 and H2 boundary conditions, in the slip-flow regime with further complication of a temperature jump condition assumption. It is shown that applying an average slip vel...

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Vydáno v:International journal of heat and mass transfer Ročník 51; číslo 15-16; s. 3753 - 3762
Hlavní autor: Hooman, K.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Oxford Elsevier Ltd 15.07.2008
Elsevier
Témata:
Applied fluid mechanics
Computational methods in fluid dynamics
Exact sciences and technology
Fluid dynamics
Fluidics
Fundamental areas of phenomenology (including applications)
MEMS
Microscale
Physics
Superposition
Temperature jump
Velocity slip
MEMS
Temperature jump
Superposition
Velocity slip
Microscale
Slip flow
Forced convection
Pipe flow
Computational fluid dynamics
Digital simulation
Boundary conditions
Microchannel
Modelling
Microstructure
Superposition method
Microfluidics
Heat transfer
ISSN:0017-9310, 1879-2189
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Shrnutí:This work presents a superposition approach to investigate forced convection in microducts of arbitrary cross-section, subject to H1 and H2 boundary conditions, in the slip-flow regime with further complication of a temperature jump condition assumption. It is shown that applying an average slip velocity and temperature jump definition, one can still use the no-slip/no-jump results with some minor modifications. Present results for slip-flow in microchannels of parallel plate, circular, and rectangular cross-sections are found to be in complete agreement with those in the literature. Application of this methodology to microchannels of triangular cross-section is also verified by comparing the present results with those obtained numerically by undertaking the commercially available software CFD-ACE.
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ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2007.12.014