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Développement d'une méthode de suivi d'interface. Applications aux écoulements diphasiques

Abstract : Spray formation mechanisms study from a liquid-gas flow is a fundamental research subject, which industrial applications are large, especially in combustion and propulsion field. Numerical simulation of such flows appear as an essential complement to experimental and theoretical studies, for comprehension and accurate prediction of such physical processes. In this study we developed an numerical interface tracking technique with a Navier-Stokes solver to study accurately the liquid-gas interface dynamics. We describe Level Set method which has been used to track interface motion, and numerical methods for solving Navier-Stokes equations. Different numerical schemes have been tested to improve the computation accuracy. Ghost Fluid Method enables a robust and accurate treatment of discontinuities across the liquid-gas interface. The codes developed (2D, 3D, parallelisation MPI) are then used to study droplets collisions. Comparisons with experimental results show that simulations are realistic and predictive. Next, feasibility studies are done on more complex configurations. Droplets spray formation from primary atomisation of a liquid jet seems to be especially a promising investigation field for such simulations. Finally, reactive interfaces propagation, as liquid vaporisation and premixed combustion have also been studied using Ghost Fluid Method to impose specific jump conditions.
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https://tel.archives-ouvertes.fr/tel-00007613
Contributor : Sébastien Tanguy <>
Submitted on : Friday, December 3, 2004 - 11:07:36 AM
Last modification on : Friday, May 22, 2020 - 11:36:04 AM
Long-term archiving on: : Friday, April 2, 2010 - 9:40:13 PM

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  • HAL Id : tel-00007613, version 1

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Sébastien Tanguy. Développement d'une méthode de suivi d'interface. Applications aux écoulements diphasiques. Modélisation et simulation. Université de Rouen, 2004. Français. ⟨tel-00007613⟩

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