One of the challenging problems in the Oil & Gas industry is accurate and reliable multiphase flow rate measurement in a three-phase flow. Application of methods with minimized uncertainty is required in the industry. Previous developed correlations for two-phase flow are complex and not capable of three-phase flow. Hence phase behavior identification in different conditions to designing and mo...

A new parallel code for the simulation of the transient, 3D dispersal of volcanic particles in the atmosphere is presented. The model equations, describing the multiphase flow dynamics of gas and solid pyroclasts ejected from the volcanic vent during explosive eruptions, are solved by a finite-volume discretization scheme and a pressure-based iterative non-linear solver suited to compressible m...

The ability to numerically simulate single phase and multiphase ow of uids in porous media is extremely important in developing an understanding of the complex phenomena governing the ow. The ow is complicated by the presence of heterogeneities in the reservoir and by phenomena such as diiusion, dispersion, and viscous ngering. These eeects must be mod-eled by terms in coupled systems of nonlin...

We present a stable numerical scheme for modelling multiphase flow in porous media, where the characteristic size of the flow domain is of the order of microns to millimetres. The numerical method is developed for efficient modelling of multiphase flow in porous media with complex interface motion and irregular solid boundaries. The Navier–Stokes equations are discretised using a finite volume ...

The mock A N N N I model is generalised in replacing the Ising spins by q-state Potts variables. Performing exact dedecoration transformations for general q and using Monte Carlo techniques in two dimensions for q = 3, a multitude of distinct spatially modulated long-range ordered phases, as well as phases with algebraic order, are found 10 spring from a multiphase point.

Abstract. In this paper, we summarize the work published in [1, 2, 3]. Based on a simple stochastic model, a general framework for modelling diffuse interface flows is derived. This allows to both define a continuous Baer and Nunziato type model depending only on one free parameter, and to derive a numerical scheme, which is actually a discontinuous Galerkin extension of [4]. The numerical sche...

The development of membrane technology is central to fields ranging from resource harvesting to medicine, but the existing designs are unable to handle the complex sorting of multiphase substances required for many systems. Especially, the dynamic multiphase transport and separation under a steady-state applied pressure have great benefits for membrane science, but have not been realized at pre...

In recent years the Smoothed Particle Hydrodynamics (SPH) approach gained popularity in modeling multiphase and free-surface flows. In many situations, due to certain reasons, interface and free-surface fragmentation occurs. As a result single SPH particle solids/droplets of one phase can appear and travel through other phases. In this paper we investigate this issue focusing on a movement of s...

Phase-based quality analysis and prediction has been widely addressed by employing different calibration modeling techniques in multiphase batch processes. In this paper, a rational analysis scheme is presented to evaluate and understand the effects of the inter-phase correlation on, such as the extraction of the latent information, model structure and quality prediction. This is performed by c...

Models with competing interactions, for example the ANNNI model, can have special points at which the ground state is infinitely degenerate, so-called multiphase points. Small perturbations can lift this degeneracy and give rise to infinite sequences of long-period phases. This paper compares the effect of three possible perturbations, quantum fluctuations, thermal fluctuations and the softenin...