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Title: A mass conserving level set method for detailed numerical simulation of liquid atomization

An improved mass conserving level set method for detailed numerical simulations of liquid atomization is developed to address the issue of mass loss in the existing level set method. This method introduces a mass remedy procedure based on the local curvature at the interface, and in principle, can ensure the absolute mass conservation of the liquid phase in the computational domain. Three benchmark cases, including Zalesak's disk, a drop deforming in a vortex field, and the binary drop head-on collision, are simulated to validate the present method, and the excellent agreement with exact solutions or experimental results is achieved. It is shown that the present method is able to capture the complex interface with second-order accuracy and negligible additional computational cost. The present method is then applied to study more complex flows, such as a drop impacting on a liquid film and the swirling liquid sheet atomization, which again, demonstrates the advantages of mass conservation and the capability to represent the interface accurately.
Authors:
;  [1] ;  [2] ;  [1]
  1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027 (China)
  2. State Key Laboratory of Turbulence and Complex Systems, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
22465663
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Computational Physics; Journal Volume: 298; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; ATOMIZATION; BENCHMARKS; COLLISIONS; COMPUTERIZED SIMULATION; EXACT SOLUTIONS; FLOW MODELS; LIQUIDS; MASS TRANSFER; VORTICES