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The effect of liquid co-flow on gas fractions, bubble velocities and chord lengths in bubbly flows. Part II: asymmetric flow configurations

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dc.contributor.author Muilwijk, Corné
dc.contributor.author Van den Akker, Harry E.A.
dc.date.accessioned 2021-05-05T11:42:12Z
dc.date.available 2021-05-05T11:42:12Z
dc.date.issued 2021
dc.identifier.uri http://hdl.handle.net/10344/10057
dc.description peer-reviewed en_US
dc.description.abstract This paper describes the effects of uniform and non-uniform liquid co-flow on the bubbly flow in a rectangular column (with two inlets) deliberately aerated unevenly. The two vertical bubbly streams, comprising uniform bubbles, started interacting downstream of the trailing edge of a splitter plate. This study quantifies the emergence of buoyancy driven flow patterns as a function of the degree of a-symmetric gas sparging and (non-)uniform liquid co-flow by using Bubble Image Velocimetry (BIV) and dual-tip optical fibre probes. Without liquid co-flow, small differences in the gas fraction of the left and right inlet had a large effect on the mixing pattern, whereas a liquid co-flow stabilized a homogeneous flow regime and the flow pattern was less sensitive to gas fraction differences. Void fractions, bubble velocities and hord lengths were measured at two fixed position in the flow channel, whereas BIV provided a global overview of the flow structures. A correlation was developed to predict (a-symmetric) operating conditions for which the gas fraction of the left and right inlet are balanced, such that the bubble motion is governed by advection and no buoyancy driven flow structures arise. The data obtained is highly valuable for CFD validation and development purposes. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries International Journal of Multiphase Flow;138, 103562
dc.subject Bubble Image Velocimetry en_US
dc.subject Optical fibre probe en_US
dc.title The effect of liquid co-flow on gas fractions, bubble velocities and chord lengths in bubbly flows. Part II: asymmetric flow configurations en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.ijmultiphaseflow.2021.103562
dc.contributor.sponsor Bernal Project at the University of Limerick en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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