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An Interface Tracking Method Based on Volume Tracking in Embedded Micro Cells

[+] Author Affiliations
Akio Tomiyama, Yusuke Nakahara, Satoru Abe

Kobe University, Kobe, Japan

Paper No. FEDSM2002-31147, pp. 849-854; 6 pages
doi:10.1115/FEDSM2002-31147
From:
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 1: Fora, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3615-0 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME

abstract

An interface tracking method based on volume tracking in micro cells embedded in regular cells is proposed. The volume tracking is based on a CIP scheme, which yields extremely sharp and jaggy interface in micro cells. However, in regular cells, the jagged interface is smoothed and the interface thickness becomes comparable to a regular cell size Δx. Single air bubbles in stagnant water and single large air bubbles in stagnant water filled in a vertical pipe are simulated with the proposed method. As a result, it is confirmed that (1) the proposed method conserves bubble volumes, (2) the interface thickness around a bubble is kept within 2Δx, and thereby the surface tension force is well evaluated by the CSF model, and (3) the method can give good predictions for bubbles in a high density-ratio system.

Copyright © 2002 by ASME

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