Journal
JOURNAL OF COMPUTATIONAL PHYSICS
Volume 308, Issue -, Pages 411-420Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2015.11.044
Keywords
Multi-scale; Multi-phase; Interfaces; Scale separation; Level-set method
Funding
- China Scholarship Council [2010629044]
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We propose an efficient formulation of the scale-separation approach which has been developed by Han et al. [10] for multi-scale sharp interface modeling of multi-phase flows based on the level-set technique. Instead of shifting the entire level-set field twice as in the original method, the improved method identifies the non-resolved interface structures from two auxiliary level-sets close to the interface. Non-resolved structures are separated from the interface by a localized re-distancing method, which increases the computational efficiency considerably compared to the original global reinitialization procedure. Several tests for two-phase flow problems, involving simple and complex interface structures, are carried out to show that the present method maintains sharper interface structures than the original method, and achieves effective scale-separation. (C) 2015 Elsevier Inc. All rights reserved.
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