The paper is designated to the analysis of queueing systems, arising in the network theory and communications theory (called multiphase queueing systems, tandem queues or series of queueing systems). Also we note that multiphase queueing systems can be useful for modelling practical multi-stage service systems in a variety of disciplines, especially on manufacturing (assembly lines), computer n...

The attachment probability of inclusions on a bubble surface is investigated based on fundamental fluid flow simulations, incorporating the inclusion trajectory and sliding time of each individual inclusion along the bubble surface as a function of particle and bubble size. Then, the turbulent fluid flow in a typical continuous casting mold, trajectories of bubbles and their path length in the ...

We propose a computational method with no ad hoc empirical parameters to determine the elastic properties of multiphase composites of complex geometries by numerically solving the stress–strain relationships in heterogeneous materials. First the randommicrostructure of the multiphase composites is reproduced in our model by the random generation-growth method. Then a high-efficiency lattice Bol...

Abstract A transient multiphase flow model is established by solving the heterogeneous dynamic equation to simulate process of slag entrapment in tundish, which can provide data for trial production reduce tundish residue on premise ensuring no entrapment. numerical simulation critical height 60 t under different steel throughputs analyzed, and following conclusions are obtained: when throughpu...

Abstract There are few studies on the shape and structure of channel-type induction heating tundish multi-physics field. Computational fluid dynamics has been used to study influence macroscopic transport behavior with channel heating. The results show that increasing depth molten pool is conducive dynamic multiphase, deeper pool, larger active area, longer residence time, more inclusions remov...

The Michelsen stability and multiphase flash calculation by direct minimization of Gibbs free energy of the system at constant temperature and pressure, was used for systems containing gas hydrates. The solid hydrate phase was treated as a solid solution. The fugacities of all components of the hydrate phase were calculated as a function of compositions by the rearranged model of van der Wa...

The most prominent aspect of multiphase flow is the variation in the physical distribution of the phases in the flow conduit known as the flow pattern. Several different flow patterns can exist under different flow conditions which have significant effects on liquid holdup, pressure gradient and heat transfer. Gas-liquid two-phase flow in an annulus can be found in a variety of practical situat...

The variety of magnetic phases observed in rare-earth heterostructures at low temperatures [1], such as Ho/Y, may be elucidated by an ANNNI-like model Hamiltonian. In previous work modelling bulk Ho [2], such a Hamiltonian with a one-dimensional parameter space produced a single multiphase point. In contrast, the parameter space of the heterostructure model is three-dimensional, and instead of ...

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...

Quenching-partitioning-tempering (Q-P-T) heat treatment is a relatively novel approach to attain excellent ductility in high-strength steels. In the present work, microstructural evolution and mechanical properties of low carbon microalloyed advanced steel were systematically investigated after Q-P-T process. The was explored by employing X-ray diffraction, transmission electron microscopy scan...