two-phase flow


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two-phase flow

[′tü ¦fāz ′flō]
(cryogenics)
Flow of helium II, or of electrons in a superconductor, thought of as consisting of two interpenetrating, noninteracting fluids, a superfluid component which exhibits no resistance to flow and is responsible for superconducting properties, and a normal component, which behaves as does an ordinary fluid or as conduction electrons in a nonsuperconducting metal.
(fluid mechanics)
Cocurrent movement of two phases (for example, gas and liquid) through a closed conduit or duct (for example, a pipe).
References in periodicals archive ?
In the works [8, 10, 11] is given a calculation methods of similar problem of the nonstationary turbulent flow in the flow part of the injector nozzle, considering the two-phase flow, which was used as the basis for setting up the own experiment.
Their topics include analyzing heat transfer in a lithium-ion battery package with a hybrid thermal management system using phase change materials and forced convection, the numerical investigation of vertical gas-liquid separators using computational fluid dynamics and statistical techniques, comparative analysis of high-lift airfoils for motorsports applications, analyzing the geometry of an automatic valve for concrete and drilling mud pumps to avoid cavitation: non-Newtonian computational fluid dynamic modeling, and pressure loss of water-carbon dioxide two-phase flow under different operating conditions.
The goal of this project is to shed new light on flow and transport in soft porous media by studying a series of three canonical flow problems (tracer transport, miscible viscous fingering, and two-phase flow) across soft adaptations of three classical model systems (a soft-walled hele shaw cell, a quasi-2d packing of soft beads, and a cylindrical 3d core of soft beads).
Two-phase flow phenomena have been an object of study during several decades with a great impact in nuclear field.
The simulation of the turbulence two-phase flow in the normal curved tube and 75% stenosis-curved tube was setup using the discrete model coupled with the mean continuity equation, the Reynolds-averaged Navier-Stokes equations, and Menter's SST k-[omega] model for a turbulent viscous incompressible non-Newtonian fluid.
For the numerical calculation, based on the commercial software, discrete particle model (DPM) is adopted to simulate the gas-liquid two-phase flow. Taylor analogy breakup (TAB) model is used to describe the droplet breakup.
With the deepening of the research on the twophase flow and boiling heat transfer, it has been found that distribution of the local interfacial parameter has an important influence on the flow and heat transfer characteristics of the two-phase flow, and the capability to predict the local void distribution in subcooled flow boiling is of great importance for the safety of boiling water reactor.
The water-driven-methane process in a coal rock mass also belongs to water-gas two-phase flow in porous media.
Numerous patents (Perkins and Marchese, 1974 [1]; Kim and Lee, 1983 [2]; Nobuta et al., 2002 [3]) have indicated that separation of vapor-liquid two-phase flow has great applications in the field of heat exchangers.
Yuan [14] developed a two-phase flow model to study the aeration process for a flat clutch plate.
The topology of the two-phase flow is represented by two properties; VOF represents the liquid volume fraction and LS is the shortest distance from the interface, positive within the liquid, negative outside and zero on the interface.

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