Fluid Dynamics in a Bubble Column: New Experiments and Simulations
Fluid Dynamics in a Bubble Column: New Experiments and Simulations
Rzehak, R.; Krauß, M.; Kováts, P.; Zähringer, K.
Bubble columns are a common type of multiphase reactors used in many chemical engineering applications. Optimization and scale-up of bubble column processes is a complex task that can greatly benefit from multiphase CFD simulations. Calculations on industrial scales become feasible by the Euler-Euler two-fluid model, but suitable closure relations describing interfacial exchange processes are needed for practical application. Concerning pure fluid dynamics of dispersed gas-liquid multiphase flow an ongoing effort has led to a validated set of closures that is applicable under a rather broad range of conditions. The availability of new experimental data with large spatial and temporal resolution and high accuracy for a comprehensive set of observables and a range of different conditions provides the opportunity for further testing of this model. In this way the reliability of the obtained predictions is continually increased.
Keywords: bubble-columns; CFD simulation; Euler Euler two fluid model; shadowgraphy; PIV; model validation
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International Journal of Multiphase Flow 89(2017), 299-312
DOI: 10.1016/j.ijmultiphaseflow.2016.09.024
Cited 47 times in Scopus
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