We present an efficient numerical methodology for the 3D computation of incompressible multi-phase flows described by conservative phase field models. We focus here on the case of density matched fluids with different viscosity (Model H). The numerical method employs adaptive mesh refinements (AMR) in concert with an efficient semi-implicit time discretization strategy and a linear, multi-level...

many important and useful applications for software agents require multiple agents on a network that communicate with each other. we often use the word “agent” to describe people who have a helping or assistive relationship to us –– travel agents, secretaries, butlers. the job of such an agent is to act autonomously to satisfy goals that we may have, give us a greater sense of productivity and ...

Surface tension effects can dominate multi-phase flows when the length scales of the problem are small. The resulting Capillary forces at a phase interface between two immiscible fluids are proportional to the local curvature of the flow and try to minimize the interfacial area. A more complex situation occurs when three phases are in contact or when two phases are in contact with a wall. The s...

This paper examines the state-of-the-art in the development of resource and admission control architectures for Next Generation Networks (NGN). The approach taken is, initially, to present some basic concepts for understanding and discussing quality of service in the context of NGN. Following this, we consider current research activities in international standardization organizations and then a...

Recent advances in computational fluid dynamics (CFD) codes along with high performance computing hardware made the codes more useful in many engineering applications. For instance, single-phase CFD codes have long been used to predict the fluid flow in fuel channels of a pressurized water reactor (PWR) [1, 2]. Considering the current affordable number of computation mesh is a little below one ...

Herewith we present a multi-phase model for debris flows, of which the flow body is supposed to be composed water, fine sediment (clay/silt) and grains. The rheology flows varies due dynamical variation composition concentrations. In study component silt/clay an individual phase, its concentration plays key role in determining interstitial fluid. Hence, there are three phases mixture, grain cla...