Numerical investigation on coalescence of bubble pairs rising in a stagnant liquid

R. H. Chen, W. X. Tian, G. H. Su, S. Z. Qiu, Yuki Ishiwatari, Yoshiaki Oka

研究成果: Article査読

80 被引用数 (Scopus)

抄録

In the present study, we preformed a two-dimensional numerical simulation of the motion and coalescence of bubble pairs rising in the stationary liquid pool, using the moving particle semi-implicit (MPS) method. Moving particles were used to describe the liquid phase and the vapor phase was evaluated using real vapor sate equation. The bubble-liquid interface was set to be a free surface boundary which could be captured according to the motion and location of interfacial particles. The behaviors of coalescence between two identical bubbles predicted by the MPS method were in good agreement with the experimental results reported in the literature. Numerical results indicated that the rising velocity of the trailing bubble was larger than that of the leading bubble. Both of the leading bubble and the trailing bubble rose faster than the isolated bubble. After coalescence, the coalesced bubble showed velocity and volume oscillations. The time of the volume oscillations increased with increasing initial bubble diameter. The wake flow and vortex would form behind the coalesced bubble.

本文言語English
ページ(範囲)5055-5063
ページ数9
ジャーナルChemical Engineering Science
66
21
DOI
出版ステータスPublished - 2011 11 1

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Applied Mathematics
  • Industrial and Manufacturing Engineering

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