Results 241 to 250 of about 3,741,194 (297)
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Proceedings of SPE Annual Technical Conference and Exhibition, 1986
ABSTRACT Two-phase flow through wellhead chokes, including both critical and subcritical flow and the boundary between them, was studied. Data were gathered for air-water and air-kerosene flows through five choke diameters from 1/4 in. (6.35 mm) to 1/2 in. (12.7 mm), and results were compared to published correlations.
R. Sachdeva +3 more
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ABSTRACT Two-phase flow through wellhead chokes, including both critical and subcritical flow and the boundary between them, was studied. Data were gathered for air-water and air-kerosene flows through five choke diameters from 1/4 in. (6.35 mm) to 1/2 in. (12.7 mm), and results were compared to published correlations.
R. Sachdeva +3 more
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Two-phase flow models in unbounded two-phase critical flows
Nuclear Engineering and Design, 1986Abstract Referring to a Loss-of-Coolant Accident situation in LWRs, an analysis of the two-phase region just downstream from the broken pipe, in which a two-phase critical flow takes place, has been performed. A characterization of the flow pattern inside the unbounded two-phase jet is given considering: • - jet's external shape, obtained by ...
G.P. Celata +3 more
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1997
Abstract In the previous chapters we have been concerned with the microfluidic properties of a single liquid. In Section 5.2 we went beyond the case of a pure liquid and studied the convection-diffusion equation for solutes in a solvent.
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Abstract In the previous chapters we have been concerned with the microfluidic properties of a single liquid. In Section 5.2 we went beyond the case of a pure liquid and studied the convection-diffusion equation for solutes in a solvent.
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Two-phase flow instrumentation
Nuclear Engineering and Design, 1993Abstract A careful measurement of the relevant two-phase flow parameters is the basis for the understanding of many thermohydraulic processes. Reliable two-phase instrumentation is therefore essential for the connection between analysis and experiment especially in the nuclear safety research where accident scenarios have to be simulated in ...
B. Brand +4 more
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Journal of Heat Transfer, 1961
Entrance effects can persist for great lengths, L/D = 300, and long times, in developing two phase flows. Wall shear stresses at moderate and low velocities contribute only slightiy to the pressure drop in slug flows. Bubblerise velocities in slug flow are quite sensitive to the velocity profile in the water ahead of the bubbles.
Peter Griffith, Graham B. Wallis
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Entrance effects can persist for great lengths, L/D = 300, and long times, in developing two phase flows. Wall shear stresses at moderate and low velocities contribute only slightiy to the pressure drop in slug flows. Bubblerise velocities in slug flow are quite sensitive to the velocity profile in the water ahead of the bubbles.
Peter Griffith, Graham B. Wallis
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1977
Matter may be divided into four phases or states: solid, liquid, gas and plasma (ionized gas). The termfluid has been used as a general name for the last three states: liquid, gas, and plasma because they may be deformed without applying any force, provided that the change of shape occurs very slowly.
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Matter may be divided into four phases or states: solid, liquid, gas and plasma (ionized gas). The termfluid has been used as a general name for the last three states: liquid, gas, and plasma because they may be deformed without applying any force, provided that the change of shape occurs very slowly.
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2003
Chronologically, the first attempt to use the level set method for flows involving external physics was in the area of two-phase inviscid compressible flow. Mulder et al. [115] appended the level set equation $$ {\phi_t} + \mathop{V}\limits^{ \to } \cdot \nabla \phi = 0 $$ (15.1) to the standard equations for one-phase compressible flow ...
Stanley Osher, Ronald Fedkiw
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Chronologically, the first attempt to use the level set method for flows involving external physics was in the area of two-phase inviscid compressible flow. Mulder et al. [115] appended the level set equation $$ {\phi_t} + \mathop{V}\limits^{ \to } \cdot \nabla \phi = 0 $$ (15.1) to the standard equations for one-phase compressible flow ...
Stanley Osher, Ronald Fedkiw
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2010
Introductory Remarks In Chapter 4 the basic gas–liquid two-phase flow regimes along with flow regime maps were reviewed. The discussion of flow regimes was limited to empirical methods applicable to commonly applied pipes and rod bundles. In this chapter mechanistic two-phase flow regime models will be discussed.
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Introductory Remarks In Chapter 4 the basic gas–liquid two-phase flow regimes along with flow regime maps were reviewed. The discussion of flow regimes was limited to empirical methods applicable to commonly applied pipes and rod bundles. In this chapter mechanistic two-phase flow regime models will be discussed.
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Chemical Engineering Science, 1962
Abstract The various factors contributing to the motion of the bubbles in two-phase flow are analysed. A theory is presented which shows that the velocity of the bubbles consists of a component equal to the superficial liquid velocity, a component equal to the superficial gas velocity and component due to buoyancy.
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Abstract The various factors contributing to the motion of the bubbles in two-phase flow are analysed. A theory is presented which shows that the velocity of the bubbles consists of a component equal to the superficial liquid velocity, a component equal to the superficial gas velocity and component due to buoyancy.
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1990
Abstract As an introduction, critical (or choked) single-phase flow is first reviewed briefly. Then, in subsequent sections two-phase flow is treated in an analogous manner. Critical two-phase flow is here only considered for a one-component flow, that is for a liquid and its vapour (for example a steam-water flow). From Chapter 5 eqn (5.
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Abstract As an introduction, critical (or choked) single-phase flow is first reviewed briefly. Then, in subsequent sections two-phase flow is treated in an analogous manner. Critical two-phase flow is here only considered for a one-component flow, that is for a liquid and its vapour (for example a steam-water flow). From Chapter 5 eqn (5.
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