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Title: Large Interface Simulation in Multiphase Flow Phenomena

An attempt to represent multiphase multi-scale flow, filling the gap between Direct Numerical Simulation (DNS) and averaged approaches, is the purpose of this paper. We present a kind of Large Interface (LI) simulation formalism obtained after a filtering process on local instantaneous conservation equations of the two-fluid model which distinguishes between small scales and large scales contributions. LI surface tension force is also taken into account. Small scale dynamics call for modelization and large scale for simulation. Joined to this formalism, a criterion to recognize LI's is developed. It is used in an interface recognition algorithm which is qualified on a sloshing case and a bubble oscillation under zero-gravity. This method is applied to a rising bubble in a pool that collapses at a free surface and to a square-base basin experiment where splashing and sloshing at the free surface are the main break-up phenomena. (authors)
Authors:
; ;  [1] ;  [2]
  1. CEA-Grenoble, 17, rue des Martyrs 38054 Grenoble Cedex 9 (France)
  2. Institut Mecanique des Fluides de Toulouse, 1 Allee du Professeur Camille Soula, 31400 Toulouse (France)
Publication Date:
OSTI Identifier:
20995476
Resource Type:
Conference
Resource Relation:
Conference: 14. international conference on nuclear engineering (ICONE 14), Miami, FL (United States), 17-20 Jul 2006; Other Information: Country of input: France
Publisher:
American Society of Mechanical Engineers - ASME, New York (United States)
Research Org:
The ASME Foundation, Inc., Three Park Avenue, New York, NY 10016-5990 (United States)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; ALGORITHMS; BUBBLES; EQUATIONS; FLOW MODELS; FLUIDS; INTERFACES; MULTIPHASE FLOW; SIMULATION; SURFACE TENSION; SURFACES; WEIGHTLESSNESS