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Droplet Motion and Phase Change Model with Two-Way Coupling

  • Fulong Zhao
  • Qianfeng Liu
  • Xiao Yan
  • Hanliang Bo
  • Chen Zeng
  • Sichao TanEmail author
Article
  • 8 Downloads

Abstract

The droplet interacts intensively with surrounding gas when moving and evaporating in the gas, of which the mutual effects of the gas and the evaporating droplet need to be taken into account. For the typical droplet model, the gas parameters are usually considered as that at infinity and the local parameter variation surrounding the droplet is neglected, consequently leading to some discrepancies. This research tries to develop a new moving droplet phase change model with two-phase coupling which characterizes the local parameter variation of gas phase surrounding the evaporating droplet. Firstly, the interaction mechanism of two phases is presented based on the droplet evaporation phenomena. Then, the droplet motion and phase change model is developed through the theoretical derivation. Subsequently, the analysis of the evaporation characteristics of the injected droplets in the hot air is conducted to simulate the operation process of the containment spray system in the nuclear power station. The numerical simulation indicates the refined droplet model is more capable for precise prediction of the situations with large quantities of evaporating droplets and with intensive interactions between two phases.

Keywords

droplet evaporate heat and mass transfer two-way coupling local parameter 

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Copyright information

© Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Fulong Zhao
    • 1
  • Qianfeng Liu
    • 2
  • Xiao Yan
    • 2
  • Hanliang Bo
    • 2
  • Chen Zeng
    • 1
  • Sichao Tan
    • 1
    Email author
  1. 1.College of Nuclear Science and TechnologyHarbin Engineering UniversityHarbinChina
  2. 2.nstitute of Nuclear and New Energy TechnologyTsinghua UniversityBeijingChina

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