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Application of Non-Convex Analytic and Geometric Tools to a PLIC-VOF Method

[+] Author Affiliations
J. López, F. Faura

Universidad Politécnica de Cartagena, Cartagena, Spain

P. Gómez, C. Zanzi, J. Hernández

UNED, Madrid, Spain

Paper No. IMECE2016-67409, pp. V007T09A005; 9 pages
doi:10.1115/IMECE2016-67409
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 7: Fluids Engineering
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5061-9
  • Copyright © 2016 by ASME

abstract

An efficient approach to handle either convex or non-convex arbitrary polytopes is applied to volume truncation and volume conservation enforcement operations involved in volume of fluid (VOF) methods. A comparison between the proposed approach and conventional procedures based on convex decomposition is carried out for different tests, demonstrating that the proposed tools represent a substantial improvement in computational efficiency. A speedup of around one order of magnitude is achieved for the reconstruction of several interfacial shapes. The non-convex tools have been used to implement a highly accurate volume of fluid (VOF) method based on a multidimensional advection scheme with edge-matched flux polyhedra and a piecewise linear interface calculation (PLIC) method. A preliminary analysis of the accuracy, computational efficiency and volume conservation properties of the implemented PLIC-VOF method is carried out.

Copyright © 2016 by ASME
Topics: Fluids , Shapes

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