Two-phase modelling of laminar film condensation from vapour–gas mixtures in declining parallel-plate channels

Siow, E.C.; Ormiston, S.J.; Soliman, H.M.

doi:10.1016/j.ijthermalsci.2006.07.001

Cited by 36 publications

(20 citation statements)

References 14 publications

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“…͑5a͒-͑5e͒ with ⌼ 1 = ⌼ 2 = ⌼ 3 = ⌼ 4 = ⌼ 5 = 0 and boundary conditions ͑8a͒-͑8d͒ with b 7 = b 9 = 0 the Navier-Stokes system. 52,[56][57][58][59] An example of the difference between the full fluiddynamic-type system and the Navier-Stokes system is demonstrated in Fig. 8.…”

Section: B Numerical Resultsmentioning

confidence: 99%

Slow flows of a vapor-gas mixture with large density and temperature variations in the near-continuum regime

2007

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A binary mixture of a vapor and a noncondensable gas in contact with the boundary made of the condensed phase ͑liquid or solid͒ of the vapor is considered in the following situation: the amount of the noncondensable gas contained in the system is of the same order of magnitude as that of the vapor; the temperature variation along the boundary may be large; the boundary is at rest, and there is no flow at infinity when an infinite domain is considered; and the Knudsen number is small ͑i.e., near-continuum regime͒. Slow steady flows ͑with Mach number of the order of Knudsen number, or equivalently, with Reynolds number of the order of unity͒ of the mixture, mainly caused by evaporation and condensation of the vapor on the boundary, are investigated on the basis of kinetic theory. The basic system used in this work is the fluid-dynamic-type system that was derived systematically from the Boltzmann system in a previous paper ͓S. Takata and K. Aoki, Transp. Theor. Stat. Phys. 30, 205 ͑2001͒; erratum, ibid. 31, 289 ͑2002͔͒ in connection with the ghost effect, and it is solved numerically by a finite-volume method. Some additional computation using the direct simulation Monte Carlo method, based on the original Boltzmann system, is also performed for comparison. The behavior of the mixture in the continuum limit in which the Knudsen number vanishes is discussed with special interest in the ghost effect.

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Section: B Numerical Resultsmentioning

confidence: 99%

Slow flows of a vapor-gas mixture with large density and temperature variations in the near-continuum regime

2007

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“…As indicated by Eqs. (20) and (21), a decrease in T W results in decreased ability of the gas to absorb moisture and causes the vapor to release increased amounts of condensate film, as determined by Siow et al [21,22]. These trends indicate that increased heat transfer is associated with decreased T W .…”

Section: Influence Of Inlet Conditions On Local Film Thickness and Lomentioning

confidence: 88%

Turbulent film condensation in the presence of non-condensable gases over a horizontal tube

Chen

Lin

2009

International Journal of Thermal Sciences

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“…Siow et al [140] compared the use of the two-phase flow model of steam/air and R134a/air for film condensation heat transfer in horizontal channels. They found that R134a/air condensation heat transfer liquid film was thicker, the heat transfer rate was lower, and the pressure drop was smaller.…”

Section: Diffusion Layer Modelmentioning

confidence: 99%

Review of vapor condensation heat and mass transfer in the presence of non-condensable gas

Huang

Zhang

Wang

2015

Applied Thermal Engineering

207

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Two-phase modelling of laminar film condensation from vapour–gas mixtures in declining parallel-plate channels

Cited by 36 publications

References 14 publications

Slow flows of a vapor-gas mixture with large density and temperature variations in the near-continuum regime

Slow flows of a vapor-gas mixture with large density and temperature variations in the near-continuum regime

Turbulent film condensation in the presence of non-condensable gases over a horizontal tube

Review of vapor condensation heat and mass transfer in the presence of non-condensable gas

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