Volume 42, Issue 7 pp. 1357-1370
Research Article

Three-Dimensional Observation of Single Air Bubble Breakup in a Stirred Tank

Frederic Krakau

Corresponding Author

Frederic Krakau

TU Berlin, Chair of Chemical & Process Engineering, Ackerstrasse 76, 13355 Berlin, Germany

Correspondence: Frederic Krakau ([email protected]), TU Berlin, Chair of Chemical & Process Engineering, Ackerstrasse 76, 13355 Berlin, Germany.Search for more papers by this author
Matthias Kraume

Matthias Kraume

TU Berlin, Chair of Chemical & Process Engineering, Ackerstrasse 76, 13355 Berlin, Germany

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First published: 09 April 2019
Citations: 8

Abstract

A fully automated three-dimensional observation of single bubble breakup trajectories in a stirred tank is demonstrated to gain unbiased and statistically relevant information about the breakup process. The mother bubble size is kept constant, independently of the stirring rate. The investigated parameter in this work is the power input. Three-dimensional bubble breakup trajectories and heat maps for the initial breakup location probability for the bottom and side views are provided. The influence of the stirrer blade angle position, at the moment of bubble detachment from the capillary, on the breakup probability is analyzed. The breakup positions are linked to the current flow field, related to the stirrer blade angle, within the tank.

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