Flux-blending schemes for interface capture in two-fluid flows

Yeng-Yung Tsui*, Shi Wen Lin, Tong Ting Cheng, Tian Cherng Wu

*Corresponding author for this work

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

This paper is aimed at developing a robust algorithm (FBICS) to capture the interface between two immiscible fluids without the need of interface reconstruction. The advection equation of the volume fraction is solved using the fully conservative finite volume method. Determination of the convective flux through each cell face is based on blending of high resolution schemes and compressive schemes to preserve the sharpness and boundedness of the interface. The flux-blending practice is fulfilled with the use of flux limiters. Test on simple advection flow problems indicates that the well-known CICSAM and HRIC schemes lose accuracy as the Courant number increases. In contrast, the present method maintains high-accuracy performance for Courant numbers up to one. The capability of the method to cope with the complicated dynamics of free surface flows is demonstrated via calculation of the collapsing flow of a water column with an obstacle.

Original languageEnglish
Pages (from-to)5547-5556
Number of pages10
JournalInternational Journal of Heat and Mass Transfer
Volume52
Issue number23-24
DOIs
StatePublished - 1 Nov 2009

Keywords

  • Free surface flows
  • Interface capturing
  • Two-fluid flows
  • Unstructured meshes
  • Volume of fluid (VOF) method

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