Mixtures containing steam, water, and solids develop when processing ore slurries at elevated temperature and pressure. Based on homogeneous one-dimensional three-phase flow theory equations are derived for pressure gradient, choking velocity, and sonic velocity of a steam-water-solids mixture flowing in a pipe. It is concluded that a quasi-choking condition may occur when the flow changes from subcooled to flashing conditions. [S0098-2202(00)00104-8]
Issue Section:
Technical Papers
Topics:
Flashing,
Flow (Dynamics),
Pipe flow,
Pressure,
Pressure gradient,
Solids,
Steam,
Water,
Pipes,
Temperature
1.
Benjamin
, M. W.
, and Miller
, J. G.
, 1942
, “The Flow of a Flashing Mixture of Water and Steam Through Pipes
,” Trans. ASME
, 64
, pp. 657
–669
.2.
Allen
, W. F.
, 1951
, “Flow of a Flashing Mixture of Water and Steam Through Pipes and Valves
,” Trans. ASME
, 73
, pp. 257
–265
.3.
Starkman
, E. S.
, Schrock
, V. E.
, Neusen
, K. F.
, and Maneely
, D. J.
, 1964
, “Expansion of a Very Low Quality Two-Phase Fluid Through a Convergent-Divergent Nozzle
,” ASME J. Basic Eng.
, 86
, pp. 247
–256
.4.
Moody
, F. J.
, 1965
, “Maximum Flow Rate of a Single Component, Two-Phase Mixture
,” ASME J. Heat Transfer
, 87
, pp. 134
–142
.5.
Henry
, R. E.
, and Fauske
, H. K.
, 1971
, “The Two-Phase Critical Flow of One-Component Mixtures in Nozzles, Orifices, and Short Tubes
,” ASME J. Heat Transfer
, 93
, pp. 179
–187
.6.
Fluerenbrock
, F.
, Zerkle
, R. D.
, and Thorpe
, J. F.
, 1976
, “Compressibility Effects in Electrochemical Machining
,” ASME J. Eng. Ind.
, 98
, pp. 423
–430
.7.
Moody, F. J., 1990, Introduction to Unsteady Thermofluid Mechanics, Wiley, New York, pp. 75 and 85.
8.
Leung
, J. C.
, 1996
, “On the Application of the Method of Landau and Lifshitz to Sonic Velocities in Homogeneous Two-Phase Mixtures
,” ASME J. Fluids Eng.
, 118
, pp. 186
–188
.9.
ASME Steam Tables, 1967, 3rd Edition.
Copyright © 2000
by ASME
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