CFD modeling of condensation process of water vapor in supersonic flows

Yan Yang, Jens Honore Walther, Yuying Yan, Chuang Wen

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The condensation phenomenon of vapor plays an important role in various industries, such as the steam flow in turbines and refrigeration system. A mathematical model is developed to predict the spontaneous condensing phenomenon in the supersonic flows using the nucleation and droplet growth theories. The numerical approach is validated with the experimental data, which shows a good agreement between them. The condensation characteristics of water vapor in the Laval nozzle are described in detail. The results show that the condensation process is a rapid variation of the vapor-liquid phase change both in the space and in time. The spontaneous condensation of water vapor will not appear immediately when the steam reaches the saturation state. Instead, it occurs further downstream the nozzle throat, where the steam is in the state of supersaturation.
Original languageEnglish
JournalApplied Thermal Engineering
Volume115
Pages (from-to)1357-1362
ISSN1359-4311
DOIs
Publication statusPublished - 2017

Keywords

  • Condensation
  • Water vapor
  • Laval nozzle
  • Supersonic flow

Cite this

Yang, Yan ; Walther, Jens Honore ; Yan, Yuying ; Wen, Chuang. / CFD modeling of condensation process of water vapor in supersonic flows. In: Applied Thermal Engineering. 2017 ; Vol. 115. pp. 1357-1362.
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abstract = "The condensation phenomenon of vapor plays an important role in various industries, such as the steam flow in turbines and refrigeration system. A mathematical model is developed to predict the spontaneous condensing phenomenon in the supersonic flows using the nucleation and droplet growth theories. The numerical approach is validated with the experimental data, which shows a good agreement between them. The condensation characteristics of water vapor in the Laval nozzle are described in detail. The results show that the condensation process is a rapid variation of the vapor-liquid phase change both in the space and in time. The spontaneous condensation of water vapor will not appear immediately when the steam reaches the saturation state. Instead, it occurs further downstream the nozzle throat, where the steam is in the state of supersaturation.",
keywords = "Condensation, Water vapor, Laval nozzle, Supersonic flow",
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CFD modeling of condensation process of water vapor in supersonic flows. / Yang, Yan ; Walther, Jens Honore; Yan, Yuying; Wen, Chuang.

In: Applied Thermal Engineering, Vol. 115, 2017, p. 1357-1362.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - CFD modeling of condensation process of water vapor in supersonic flows

AU - Yang, Yan

AU - Walther, Jens Honore

AU - Yan, Yuying

AU - Wen, Chuang

PY - 2017

Y1 - 2017

N2 - The condensation phenomenon of vapor plays an important role in various industries, such as the steam flow in turbines and refrigeration system. A mathematical model is developed to predict the spontaneous condensing phenomenon in the supersonic flows using the nucleation and droplet growth theories. The numerical approach is validated with the experimental data, which shows a good agreement between them. The condensation characteristics of water vapor in the Laval nozzle are described in detail. The results show that the condensation process is a rapid variation of the vapor-liquid phase change both in the space and in time. The spontaneous condensation of water vapor will not appear immediately when the steam reaches the saturation state. Instead, it occurs further downstream the nozzle throat, where the steam is in the state of supersaturation.

AB - The condensation phenomenon of vapor plays an important role in various industries, such as the steam flow in turbines and refrigeration system. A mathematical model is developed to predict the spontaneous condensing phenomenon in the supersonic flows using the nucleation and droplet growth theories. The numerical approach is validated with the experimental data, which shows a good agreement between them. The condensation characteristics of water vapor in the Laval nozzle are described in detail. The results show that the condensation process is a rapid variation of the vapor-liquid phase change both in the space and in time. The spontaneous condensation of water vapor will not appear immediately when the steam reaches the saturation state. Instead, it occurs further downstream the nozzle throat, where the steam is in the state of supersaturation.

KW - Condensation

KW - Water vapor

KW - Laval nozzle

KW - Supersonic flow

U2 - 10.1016/j.applthermaleng.2017.01.047

DO - 10.1016/j.applthermaleng.2017.01.047

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JO - Applied Thermal Engineering

JF - Applied Thermal Engineering

SN - 1359-4311

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