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An Improved Three-Dimensional Level Set Method for Gas-Liquid Two-Phase Flows (Keynote)

[+] Author Affiliations
Hiroyuki Takahira, Tomonori Horiuchi

Osaka Prefecture University, Sakai, Osaka, Japan

Sanjoy Banerjee

University of California, Santa Barbara, CA

Paper No. FEDSM2003-45389, pp. 1547-1554; 8 pages
doi:10.1115/FEDSM2003-45389
From:
  • ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
  • Volume 1: Fora, Parts A, B, C, and D
  • Honolulu, Hawaii, USA, July 6–10, 2003
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3696-7 | eISBN: 0-7918-3673-8
  • Copyright © 2003 by ASME

abstract

For the present study, we developed a three-dimensional numerical method based on the level set method that is applicable to two-phase systems with high-density ratio. The present solver for the Navier-Stokes equations was based on the projection method with a non-staggered grid. We improved the treatment of the convection terms and the interpolation method that was used to obtain the intermediate volume flux defined on the cell faces. We also improved the solver for the pressure Poisson equations and the reinitialization procedure of the level set function. It was shown that the present solver worked very well even for a density ratio of the two fluids of 1:1000. We simulated the coalescence of two rising bubbles under gravity, and a gas bubble bursting at a free surface to evaluate mass conservation for the present method. It was also shown that the volume conservation (i.e., mass conservation) of bubbles was very good even after bubble coalescence.

Copyright © 2003 by ASME

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