Flow multiphase

In general terms, the phenomena described above belong to the class of phase transitions and critical phenomena in confined spaces. From the field of statistical physics, some far-reaching results applying to such problems are knovm. One fruitful concept used in statistical physics is the correlation length (see, e.g., [64]). The correlation length describes how a local field quantity evaluated at one point in space is correlated with the same quantity at another point. As an example, the correlation length crfor density fluctuations in a fluid is defined via [Pg.143]

close to the critical point thermodynamic quantities at comparatively distant spatial locations become correlated. Especially in the case of liquid micro flows close to a phase transition, these considerations suggest that the correlation length and not the molecular diameter is the length scale determining the onset of deviations from macroscopic behavior. [Pg.143]

Occasionally, piping systems are designed to carry multiphase fluids (combinations of gases, Hquids, and soflds), or non-Newtonian fluids. Sizing piping for such systems is beyond the scope of this article. PubHcations covering multiphase flow (20) and non-Newtonian flow (21) are available. [Pg.56]

Flows are typically considered compressible when the density varies by more than 5 to 10 percent. In practice compressible flows are normally limited to gases, supercritical fluids, and multiphase flows containing gases. Liquid flows are normally considerea incompressible, except for certain calculations involved in hydraulie transient analysis (see following) where compressibility effects are important even for nearly incompressible hquids with extremely small density variations. Textbooks on compressible gas flow include Shapiro Dynamics and Thermodynamics of Compre.ssible Fluid Flow, vol. 1 and 11, Ronald Press, New York [1953]) and Zucrow and Hofmann (G .s Dynamics, vol. 1 and 11, Wiley, New York [1976]). [Pg.648]

FIG. 6-55 Critical cavitation number vs. diameter ratio (3. Reprinted from Thotpe, Flow regime transitions due to cavitation in the flow through an orifice, " Int. J. Multiphase Flow, i6,1023-1045. Copyright 1990, with kindper-mission from Elsevier Science, Ltd., The Boulevard, Langford Lane, Kldlington 0X5 1GB, United Kingdom. )... [Pg.671]

Multiphase flow capability. Available. Available. Available. Available. Available. [Pg.827]

Di Felice, R., 1994. The voidage function for fluid-particle interaction systems. International Journal of Multiphase Flow, 20, 153-159. [Pg.304]

C. D. Han, Multiphase Flow in Polymer Processing, Academic Press, New York (1981). [Pg.703]

Fayed A. S. and Otten, L., Gomparing Measured with Calculated Multiphase Flow Pressure Drop, Oil and Gas Jour., Aug. 22, 1983, p. 136. [Pg.158]

Grolmes, M. A., Leung, J. C. and Fauske, H. K, A Review of Simplified Multiphase Flow Methods for Emergency Relief Calculations, Paper Presented at the AIChE 1990 Spring National Meeting, Orlando, FL, March 18-22, 1990. [Pg.545]

Hammitt, F. G., Cavitation and Multiphase Flow Phenomena. McGraw-Hill, New York (1980)... [Pg.1350]

Martin CJ, Whalley PB (1983) Int Conf Phys Modell Multiphase Flow Coventry Apr, Cranfield,... [Pg.122]

Choudhury D Sen, Radhakrishnan VR, Mitra AK (1983) Phys Modell Multiphase Flow Coventry, Apr Cranfield, p 255... [Pg.122]

Multiphase flow is important in many areas of chemical and process engineering and the behaviour of the material will depend on the properties of the components, the flowrates and the geometry of the system. In general, the complexity of the flow is so great that design methods depend very much on an analysis of the behaviour of such systems in practice and, only to a limited extent, on theoretical predictions. Some of the more important systems to be considered are ... [Pg.181]

Hewitt, G. F. Int. J. Multiphase Flow, 9 (1983) 715-749. Two-phase flow studies in the United Kingdom. [Pg.226]

Weisman, J., Duncan, D Gibson, J. and Crawford, T. Inti. JL Multiphase Flow 5 (1979) 437-462. Effects of fluid properties and pipe diameter on two phase flow patterns in horizontal lines. [Pg.227]

Mandhane, J. M., Gregory, G. A. and Aziz, K. Inti. JL Multiphase Flow l (1974) 537-553, A flow pattern map for gas-liquid flow in horizontal pipes. [Pg.227]

Pirie. R. L., Davies, T., Khan, A. R. and Richardson, J. F. 2nd International Coni, on Flow Measurement — BHRA, London (1988) Paper F3, 187. Measurement of liquid velocity in multiphase flow by salt injection method. [Pg.228]

Sfglf.r, G. 217. 220. 222, 229 Separated flow model, multiphase flow 187 Separation during flow 47... [Pg.890]

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