LES-stochastic coupling model of bubble-laden turbulence

Y. Niida, Y. Mitobe, Y. Watanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A two-way stochastic sub-grid bubble model is applied to Large Eddy Simulation (LES) for computing advection and diffusion processes of buoyant air bubbles via turbulence-bubble interactions. The model has been validated through comparisons with previous experiments for bubble rise velocity and fluid turbulence in bubble plumes. It is found that a major feature of the bubble-laden turbulent flow is featured by recursive momentum exchanges between the bubbles and fluid around them - the bubble motion intensifies the fluid turbulence, which also enhances dispersions of the bubbles owing to the intensified turbulence diffusion.

Original languageEnglish
Title of host publicationProceedings of the 20th (2010) International Offshore and Polar Engineering Conference, ISOPE-2010
Pages750-754
Number of pages5
Publication statusPublished - 2010 Sep 10
Event20th International Offshore and Polar Engineering Conference, ISOPE-2010 - Beijing, China
Duration: 2010 Jun 202010 Jun 25

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume3
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other20th International Offshore and Polar Engineering Conference, ISOPE-2010
CountryChina
CityBeijing
Period10/6/2010/6/25

Keywords

  • Air bubble
  • Large Eddy Simulation
  • Stochastic model

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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  • Cite this

    Niida, Y., Mitobe, Y., & Watanabe, Y. (2010). LES-stochastic coupling model of bubble-laden turbulence. In Proceedings of the 20th (2010) International Offshore and Polar Engineering Conference, ISOPE-2010 (pp. 750-754). (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 3).