Applying Upwind Godunov Methods to Calculate Two—Phase Mixture Conservation Laws

A theoretical model is developed for predicting the maximum flow rate of a single component, two-phase mixture. It is based upon annular flow, uniform linear velocities of each phase, and equilibrium between liquid and vapor. Flow rate is maximized with respect to local slip ratio and static pressure for known stagnation conditions. Graphs are presented giving maximum steam/water flow rates for: local static pressures between 25 and 3,000 psia, with local qualities from 0.01 to 1.00; local stagnation pressures and enthalpies which cover the range of saturation states.

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Determination of the density and flow rate of the two-phase mixture under steady and emergency conditions

Thermal Engineering ◽

10.1134/s0040601512080034 ◽

2013 ◽

Vol 60 (3) ◽

pp. 195-201 ◽

Cited By ~ 4

Author(s):

E. A. Boltenko

Keyword(s):

Flow Rate ◽

Two Phase ◽

Phase Mixture

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Microstructure of Polycrystalline MgO Penetrated by a Silicate Liquid

Microscopy and Microanalysis ◽

10.1017/s1431927696211134 ◽

1996 ◽

Vol 2 (3) ◽

pp. 113-128 ◽

Cited By ~ 3

Author(s):

Sundar Ramamurthy ◽

Michael P. Mallamaci ◽

Catherine M. Zimmerman ◽

C. Barry Carter ◽

Peter R. Duncombe ◽

...

Keyword(s):

Grain Boundaries ◽

Grain Growth ◽

Glassy Phase ◽

Silicate Liquid ◽

Two Phase ◽

The Matrix ◽

Devitrification Process ◽

Phase Mixture

Dense, polycrystalline MgO was infiltrated with monticellite (CaMgSiO4) liquid to study the penetration of liquid along the grain boundaries of MgO. Grain growth was found to be restricted with increasing amounts of liquid. The inter-granular regions were generally found to be comprised of a two-phase mixture: crystalline monticellite and a glassy phase rich in the impurities present in the starting MgO material. MgO grains act as seeding agents for the crystallization of monticellite. The location and composition of the glassy phase with respect to the MgO grains emphasizes the role of intergranular liquid during the devitrification process in “snowplowing” impurities present in the matrix.

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