Two-phase flow

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Two-phase flow refers to the interactive flow of two distinct phases – each phase representing a mass or volume of matter – with common interfaces in a channel. While combination between any two phases represents a significant area of two-phase flow, liquid-vapor (gas) flow is by far the most common in various industries and thus has been investigated in greater depth.

Concepts and notations, Flow Patterns in vertical tube, and horizontal tubes.

11.3 Two-Phase Flow Models 11.3.1 Homogeneous Flow Model 11.3.2 Separated Flow Model 11.3.3 Frictional Pressure Drop Correlations Based on the Homogeneous Model 11.3.3.2 Correlations Based on the Separated Flow Model Bounds on Two-Phase Flow 11.3.4 Void Fraction 11.4 Forced Convective Condensation in Tubes 11.4.1 Two-Phase Flow Regimes 11.4.2 Heat Transfer Predictions 11.5 Forced Convective Boiling in Tubes 11.5.1 Regimes in Horizontal and Vertical Tubes 11.5.2 Bubble Lift-Off Size in Forced Convective Boiling 11.5.3 Heat Transfer Predictions 11.6 Two-Phase Flow and Heat Transfer in Micro- and Minichannels 11.6.1 Two-Phase Flow Patterns 11.6.2 Flow Condensation Flow Pattern in Two-Phase Condensation in Miniature and Capillary Tubes Annular Flow Condensation in a Miniature Tube 11.6.3 Flow Evaporation and Boiling Onset of Nucleate Boiling in Microchannel Flow Flow Evaporation in Minichannel Heat Sink with Axial Grooves Boiling Heat Transfer in a Miniature Axially-Grooved Rectangular Channel Boiling in Micro/Miniature Channels References Problems