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Experimental Assessment of an Innovative Device to Mimic Bubble Swarm Turbulence
Author(s) -
Mießner Ulrich,
Kück Ulf D.,
Haase Katharina,
Kähler Christian J.,
Fritsching Udo,
Thöming Jorg
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201600688
Subject(s) - turbulence , bubble , mechanics , turbulence kinetic energy , swarm behaviour , k epsilon turbulence model , grid , physics , simulation , computer science , mathematics , geometry , artificial intelligence
The local mass transfer of a bubble under swarm turbulence influence is the key to the performance of gas‐liquid contactors. For measurements, optical accessibility is reduced due to an increased void fraction. The performance of a flexible grid of rigid particles to mimic the hydrodynamic conditions of bubble‐induced swarm turbulence is assessed using spectral energy density distribution and an approach to connect the turbulent intensity to the according length scale of the flow. Despite the significant physical property differences to real bubbly flow the flexible grid is found to realistically mimic the swarm turbulence of a cocurrent bubble column. Hence, a single bubble approaching the proposed flexible grid experiences hydrodynamic conditions comparable to real bubble‐induced turbulence.