期刊
JOURNAL OF COMPUTATIONAL PHYSICS
卷 229, 期 10, 页码 3652-3663出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2010.01.019
关键词
Smoothed particle hydrodynamics; Free-surface flows; Fluid-structure impact flows; Level-set function; Flow visualization
资金
- Minister Infrastrutture e Trasporti
- European Community [FP7/2007-2013, 225967]
The present paper proposes a novel algorithm to detect the free-surface in particle simulations, both in two and three dimensions Since the proposed algorithms are based on SPH interpolations their implementation does not require complex geometrical procedures Thus the free-surface detection can be easily embedded in SPH solvers, without a significant increase of the CPU time. Throughout this procedure accurate normal vectors to the free-surface are made available Then it is possible to define a level-set function algorithm which is presented in detail. The latter allows in-depth analyses of three-dimensional free-surface simulations by using standard visualization tools, including internal features of the flow. The algorithms proposed for detecting free-surface particles and defining the level-set function are validated on simple and complex two- and three-dimensional flow simulations The usefulness of the proposed procedures to post-process and analyze complex flows are illustrated on realistic examples (C) 2010 Elsevier Inc All rights reserved
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