Orateur
Dr
Elie Hachem
Description
We propose in this work an adaptive variational multiscale method for complex multiphase
flows with surface tension: applications to 3D bubble dynamics, turbulent boiling and solid
quenching with experimental comparisons will be presented. A new conservative level-set
method is used to provide a precise position of the interfaces. An implicit implementation of
the surface tension in the context of the Continuum Surface Force is proposed to circumvent
the capillary time step restriction. The obtained system is then solved using a unified
compressible-incompressible variational multiscale stabilized finite element method
designed to handle the abrupt changes at the interface and large density and viscosity ratios.
Combined with an a posteriori error estimator, we show that anisotropic mesh adaptation
yields an accurate 3D modeling framework for turbulent multiphase flows with phase
change.
