Multiphase flows reveal contorted fluid structures which cannot be described in terms of drop/bubble diameter distribution. Here we use a morphological descriptor originates from the field heterogeneous materials that was proved to nicely tailored for characterizing microstructure e.g. porous media. It is based on Minkowski Functionals – an erudite expression simply designates integrated volume...

This paper concerns the discretization on general 3D meshes of multiphase compositional Darcy flows in heterogeneous anisotropic porous media. Extending Coats’ formulation [15] to an arbitrary number of phases, the model accounts for the coupling of the mass balance of each component with the pore volume conservation and the thermodynamical equilibrium, and dynamically manages phase appearance ...

Constraints on the clustered mass density Ωm of the universe derived from the observed population mean intracluster gas fraction 〈fICM 〉 of X–ray clusters may be biased by reliance on a single-phase assumption for the thermodynamic structure of the intracluster medium (ICM). We propose a descriptive model for multiphase structure in which a spherically symmetric ICM contains isobaric density pe...

a new dynamic friction model for modeling of elliptical vibration assisted turning (evat) was developed in this research. the periodic change of the friction force direction is known to be one of the most important causes of this phenomenon. in modeling of machining processes (including the evat process), static coulomb friction model was employed by most of the researchers. because of the peri...

Abstract GeoChemFoam is an open-source OpenFOAM-based toolbox that includes a range of additional packages solve various flow processes from multiphase transport with interface transfer, to single-phase in multiscale porous media, reactive mineral dissolution. In this paper, we present novel solver for simulations on complex pore geometries, including microfluidic devices and micro-CT images, i...

Natural cavitation is defined as the phenomenon of the formation of vapor bubbles in a flow due to the pressure falls below the liquid’s vapor pressure. The inception of the cavitation bubble is influenced by many factors, such as impurities, turbulence, liquid thermal properties etc. In this paper, we simulate a 2D cavitation ”bubble” growth under shear flow in the inception stage by Single-Co...

The simulation of flow in porous media is a computationally demanding task. Thermodynamical equilibrium calculations and complex, heterogeneous geological structures normally gives a multiphysics/multidomain problem to solve. Thus, efficient solution methods are needed. The research simulator Athena is a 3D, multiphase, multicomponent, porous media flow simulator. A parallel version of the simu...

In this paper, the lattice Boltzmann method is reviewed for specific applications to numerical simulation of multiphase flow problems. A thorough literature review regarding the multi-phase lattice Boltzmann method was conducted with special focus on flows with large density and viscosity ratios between the two phases. A multiphase model with the capability of handling large-density-ratios is c...