Computing three-dimensional two-phase flows with a mass-conserving level set method

  • Authors:

  • S. P. van der Pijl;A. Segal;C. Vuik;P. Wesseling

  • Affiliations:

  • The Dutch National Research Centre for Mathematics and Computer Science, Centrum voor Wiskunde en Informatica (CWI), P.O. Box 94079, 1090 GB, Amsterdam, The Netherlands;Delft University of Technology, Faculty of Technical Mathematics and Informatics, P.O. Box 94079, Mekelweg 4, 2628 CD, Delft, The Netherlands;Delft University of Technology, Faculty of Technical Mathematics and Informatics, P.O. Box 94079, Mekelweg 4, 2628 CD, Delft, The Netherlands;Delft University of Technology, Faculty of Technical Mathematics and Informatics, P.O. Box 94079, Mekelweg 4, 2628 CD, Delft, The Netherlands

  • Venue:
  • Computing and Visualization in Science
  • Year:
  • 2008

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Abstract

A method is described to compute three- dimensional two-phase flow, allowing large density ratios and coalescence and break-up of bubbles. The level set method is used to describe interfaces, and the volume-of-fluid method is used to ensure mass conservation. Efficiency in computing the interface dynamics is achieved by using a functional relation between the level set and volume-of-fluid functions. Difficulties and remedies in re-initialization of the level set function and inaccurate compution of surface tension are discussed. Test cases for validation are described, and demanding two-bubble computations to show the generality and the versatility of the method are presented.