Results 271 to 280 of about 1,275,135 (308)
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Flow field-flow fractionation: Critical overview
Journal of Chromatography A, 2013This overview regards some critical issues in performing flow field-flow fractionation (flow FFF, FlFFF, AF4, HF-FlFFF, HF5). It includes the channel thickness, void time, channel-flow parabolic profile, channel-flow velocity gradient, uniformity of the cross-flow, sample injection time, relaxation/focusing time, width of sample starting zone ...
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2009
Chapter 7 is devoted to the critical multiphase flow. It starts with the mathematical definition of the criticality condition, with the appropriate design of a numerical grid structure and numerical iteration strategy. Then the methods used in the modern design are presented starting from the simple models and increasing gradually the complexity. First
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Chapter 7 is devoted to the critical multiphase flow. It starts with the mathematical definition of the criticality condition, with the appropriate design of a numerical grid structure and numerical iteration strategy. Then the methods used in the modern design are presented starting from the simple models and increasing gradually the complexity. First
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Critical Flow Properties of Steam
SPE Latin America Petroleum Engineering Conference, 1990ABSTRACT Understanding the thermodynamic properties of steam at critical flow conditions is important to the design, operation and management of steam distribution network and hence the cost of production in steam-enhanced recovery projects.
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Generalised critical free-surface flows
Journal of Engineering Mathematics, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jean-Marc Vanden-Broeck, Frédéric Dias
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Unsteady critical liquid sheet flows
Journal of Fluid Mechanics, 2017The unsteady global dynamics of a gravitational liquid sheet interacting with a one-sided adjacent air enclosure (commonly referred to as nappe oscillation configuration) is addressed under the assumptions of potential flow and the presence of surface tension effects.
GIRFOGLIO, MICHELE +3 more
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International Journal of Multiphase Flow, 1994
Abstract Understanding the heat and mass transfer phenomena occurring during critical flow of two-phase mixtures is of primary importance in the safety analyses of pressurized water, boiling water and liquid-metal-cooled nuclear reactors. It has been shown that during a blowdown incident, the critical flow rate of the two-phase mixture may be ...
Ezra Elias, G.S. Lellouche
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Abstract Understanding the heat and mass transfer phenomena occurring during critical flow of two-phase mixtures is of primary importance in the safety analyses of pressurized water, boiling water and liquid-metal-cooled nuclear reactors. It has been shown that during a blowdown incident, the critical flow rate of the two-phase mixture may be ...
Ezra Elias, G.S. Lellouche
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Critical Layers m Parallel Flows
Studies in Applied Mathematics, 1972Finite amplitude neutrally stable two‐dimensional disturbances in parallel flows are determined for large Reynolds numbers when both nonlinearity and viscosity are important in the critical layer. The phase shift across the critical layer depends on the local vertical Reynolds number in the critical layer, and it varies monotonically between the value ...
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Super-Fine Structure in the Critical Flow-Rate of Critical Flow Venturi Nozzles
Volume 1: Fora, Parts A and B, 2002It is shown that critical flow Venturi nozzles need time intervals, i.e., more than five hours, to achieve steady state conditions. During these intervals, the discharge coefficient varies gradually to reach a value inherent to the pressure ratio applied. When a nozzle is suddenly put in the critical condition, its discharge coefficient is trapped at a
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COMPLEXITY IN A CRITICAL TRAFFIC FLOW
International Journal of Modern Physics C, 2000The traffic flow near the jamming transition is numerically studied by computer simulations of a coupled-map model. Just above the transition, a variety of velocities with which the traffic jams propagate are observed. The entropy of the traffic flow becomes maximum at the same time.
Satoshi Yukawa, Macoto Kikuchi
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Criticality of compressible rotating flows
Physics of Fluids, 2007The effect of compressibility on the criticality of swirling subsonic flows is investigated. This study extends previous works by Rusak and Lee [J. Fluid Mech. 461, 301 (2002); 501, 25 (2004)] on the critical swirl of subsonic vortex flows in a circular straight pipe.
Laurent Jacquin +2 more
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