Fragmentation and coalescence dynamics in multiphase flows

• Published in: Experimental thermal and fluid science Vol. 6; no. 3; pp. 211 - 251
• Main Author: Kolev, N.I.
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Inc 1993; Elsevier Science
• Subjects: Acceleration; Agglomeration; bag-and-stamen breakup; bubbles; Bubbles (in fluids); Channel flow; channels; Coalescence; Codes (symbols); Computer simulation; droplets; Exact sciences and technology; Fluid dynamics; fragmentation; fragmentation modes; Fundamental areas of phenomenology (including applications); Jets; liquid metal fragmentation; Mathematical models; Nonhomogeneous flows; particle production rate; Particles (particulate matter); Physics; pools; sheet stripping; Stability; thermomechanical fragmentation; Turbulence; wave crest stripping; models; coalescence; droplets; particle production rate; pools; agglomeration; fragmentation modes; thermomechanical fragmentation; jets; turbulence; bag-and-stamen breakup; fragmentation; sheet stripping; liquid metal fragmentation; channels; wave crest stripping; bubbles; Collapse; Bubble; Turbulence; Multiphase flow; Jet; Agglomeration; Review; Coalescence; Modeling; Fragmentation; Drop
• ISSN: 0894-1777; 1879-2286
• DOI: 10.1016/0894-1777(93)90065-Q

There are many processes in nature and technology in which the time needed for fluid fragmentation or coalescence is comporable to the characteristic time of the investigated macroscopic physical phenomenon. Thus methods and models are needed to generalize laboratory observations, in order to adequately model fragmentation and coalescence dynamics and their influence on system behavior of flows. This review contains constitutive models for particle and jet fragmentation dynamics as well as models for the reverse process, the dynamics of the coalescence of particles in pools and channels due to acceleration- and turbulence-induced instabilities. The purpose of the review is to summarize the formalized experimental and theoretical information from the point of view of possible implementation in computer codes for mathematical modeling of transient multiphase flows.