A level-set approach for compressible, multiphase fluid flows with mass transfer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

In this work, a new level-set-based approach is presented and applied to compressible, multiphase flows. Using a species-mass-conservation-based level-set transport equation, several advantages over signed-distance-function- based methods are demonstrated. Specific improvements include a ghost-fluid-free method for highly compressible problems, extensions to an arbitrary number of species, and finite-rate chemistry mass transfer modeling. While maintaining higher-order numerics, the approach is applicable to three-dimensional, time-accurate/steady, turbulent simulations. Herein, the method is applied to a flow solver that fully couples the mass, momentum, energy, and level-set transport equation; although the methods are equally applicable to segregated flow solvers. The methods are tested for ventilated supercavities, natural cavitation (incompressible, compressible, and thermal), and shock-induced boiling. Lastly, new reinitialization methods are developed specific to cavitating flows that decrease the interface diffusion where needed, while retaining an ability to admit subgrid-scale mixtures. Such an approach enables a more physical solution method for certain classes of multiphase flows. This formulation of the level-set approach is a general, valid, method that could easily be incorporated into any species-mass conservation solver.

Original languageEnglish (US)
Title of host publication19th AIAA Computational Fluid Dynamics Conference
StatePublished - 2009
Event19th AIAA Computational Fluid Dynamics Conference - San Antonio, TX, United States
Duration: Jun 22 2009Jun 25 2009

Publication series

Name19th AIAA Computational Fluid Dynamics Conference

Other

Other19th AIAA Computational Fluid Dynamics Conference
CountryUnited States
CitySan Antonio, TX
Period6/22/096/25/09

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Automotive Engineering

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