Bubbly Flows: Analysis, Modelling and CalculationMartin Sommerfeld Springer Science & Business Media, 06.12.2012 - 351 Seiten The book summarises the outcom of a priority research programme: 'Analysis, Modelling and Computation of Multiphase Flows'. The results of 24 individual research projects are presented. The main objective of the research programme was to provide a better understanding of the physical basis for multiphase gas-liquid flows as they are found in numerous chemical and biochemical reactors. The research comprises steady and unsteady multiphase flows in three frequently found reactor configurations, namely bubble columns without interiors, airlift loop reactors, and aerated stirred vessels. For this purpose new and improved measurement techniques were developed. From the resulting knowledge and data, new and refined models for describing the underlying physical processes were developed, which were used for the establishment and improvement of analytic as well as numerical methods for predicting multiphase reactors. Thereby, the development, lay-out and scale-up of such processes should be possible on a more reliable basis. |
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bubble break-up bubble coalescence bubble column bubble diameter bubble rise bubble size distribution bubble swarm bubble velocity bubbly flows calculated Chem Eng Sci coalescence and break-up coefficient computational daughter bubbles Direct numerical simulation dispersed phase drag coefficient dynamics eddy EPS-Grafik flow field fluid gas hold-up gas phase grid image intensifiers interaction interface interfacial area large bubbles laser lift force liquid flow liquid phase liquid velocity local bubble mass transfer mean bubble method Mewes motion multiphase flows Navier-Stokes equations nozzle number density numerical simulation optical parameters Particle Tracking Velocimetry phase flow population balance equation pressure profiles radial reactors relative velocity rise velocity Sauter mean diameter small bubbles sparger stirrer superficial gas velocity superficial velocity surface tension three-phase three-phase flow tion tomography transport equation two-phase flow vector Velocimetry velocity field vertical viscosity void fraction volume fraction Vorschau vortices X-ray