1MSME - Laboratoire de Modélisation et Simulation Multi Echelle (Université Paris-Est, 5 Bd Descartes, 77454 Marne-la-Vallée, Cedex 2
Université Paris-Est Créteil Val de Marne(UPEC) Faculté des Sciences et Technologie - Equipe de Biomécanique
61 avenue du général de Gaulle 94010 Créteil Cedex - France)
Abstract : The atomization of fuel jets in car or plane engines involves complex process with multiphase motions and turbulent flow regimes in a highly coupled way. The Direct Numerical Simulation (DNS) of interfacial flows is investigated in order to characterize the coupling between turbulent flow structures and interface deformations occurring during atomization of a liquid sheet. An incompressible Ghost Fluid formulation of the Navier-Stokes equations is coupled to a level set interface tracking method for representing all the flow and interfacial scales at small scale. A Homogeneous Isotropic Turbulence (HIT) is considered which interacts with an initially flat liquid sheet surrounded by air. The DNS provides detailed simulations used to carry out a parametric study of turbulence-interface interactions according to density and viscosity ratios at the interface as well as surface tension magnitude.
https://hal-upec-upem.archives-ouvertes.fr/hal-01172278
Contributor : Stéphane Vincent
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Submitted on : Thursday, July 9, 2015 - 9:52:01 AM
Last modification on : Thursday, July 18, 2019 - 4:36:06 PM
Long-term archiving on : Wednesday, April 26, 2017 - 12:33:00 AM
Stéphane Vincent, Jean-Luc Estivalezes. Direct numerical simulation of turbulent two-phase flows: application to liquid sheet atomization. CHT-15, May 2015, New Brunswick, France. ⟨hal-01172278⟩
