CFD modeling of condensation process of water vapor in supersonic flows

Yang, Yan and Walther, Jens Honore and Yan, Yuying and Wen, Chuang (2017) CFD modeling of condensation process of water vapor in supersonic flows. Applied Thermal Engineering, 115 . pp. 1357-1362. ISSN 1873-5606

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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.

Item Type: Article
Keywords: Condensation; Water vapor; Laval nozzle; Supersonic flow
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: https://doi.org/10.1016/j.applthermaleng.2017.01.047
Depositing User: Eprints, Support
Date Deposited: 28 Feb 2017 11:56
Last Modified: 28 Feb 2017 12:45
URI: http://eprints.nottingham.ac.uk/id/eprint/40902

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