Mass Transfer in Reactive Bubbly Flows – A Single‐Bubble Study

Merker, David; Böhm, Lutz; Oßberger, Martin; Klüfers, Peter; Kraume, Matthias

doi:10.1002/ceat.201600715

Cited by 33 publications

(16 citation statements)

References 35 publications

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“…The integral results of the bubble rise velocity and the bubble shape are compared with experimental results from a setup described in . The bubble rise behavior is predicted for three different biopolymer solutions and bubble diameters in the range of 3–8 mm.…”

Section: Case Descriptionmentioning

confidence: 99%

Numerical Characterization of the Bubble Rise Behavior in Viscoelastic Liquids

et al. 2019

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The bubble rise behavior in viscoelastic media is analyzed numerically with CFD. Three different constitutive models, Giesekus, linear and exponential Phan-Thien-Tanner, are used to evaluate three different biopolymer solutions. The terminal rise velocity over a range of bubble sizes is validated against experimental data. The local velocity fields are compared with respect to the shape and onset of the negative wake. Furthermore, the normal and shear components of the stress fields, transformed according to the local flow direction, are given. The simulations are performed with a volume of fluid solver in OpenFOAM.

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Section: Case Descriptionmentioning

confidence: 99%

Numerical Characterization of the Bubble Rise Behavior in Viscoelastic Liquids

et al. 2019

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“… summarizes the state of the art concerning this field of ongoing research. First studies utilizing the reactive systems have been carried out , , . The measurement of the species concentrations in reactive systems is a challenging task.…”

Section: Chances and Obstaclesmentioning

confidence: 99%

Laser‐Induced Fluorescence in Multiphase Systems

et al. 2018

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Nowadays, multiphase flows occur in many different applications in everyday life or industrial context. Consequently, the understanding of transport phenomenolgy between the participating phases is a crucial task of recent and prospective research. When it comes to the optimization of absorption and chemical reaction tasks in process industry, in‐depth knowledge concerning mass transfer is required. The laser‐induced fluorescence (LIF) imaging is therefore a promising optical measurement technique to characterize concentration fields with high spatial and temporal resolution. This review gives an overview of the different fields of research within which LIF measurements are carried out, with focus on gas‐liquid systems. Chances and obstacles of recently publicated results as well as experiences of LIF methods regarding multiphase flows are presented and discussed.

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“…Merker et al evaluated single bubbles in bubble columns with a rising bubble test cell and a counter‐current flow test cell (Figure ), following the works performed by Tsuchiya in 1997 and 2003 …”

Section: Systems With Co2mentioning

confidence: 99%

Reaction Systems for Bubbly Flows

et al. 2018

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Reactive bubbly flows are at the heart of multiphase flows which are a major topic in chemical engineering since many bulk chemicals are produced in bubbly flows. However, the factors determining product yield and selectivity are often subject of complicated mass transfer effects. Herein, we describe the latest developments in the detection of mass transfer [a] is holding a permanent position in the Herres-Pawlis group at RWTH Aachen University for advanced spectroscopy, density functional calculations and X-ray crystallography. He studied Chemistry at the University of Paderborn and finished his PhD thesis at TU Dortmund in 2011 on the coordination chemistry of late transition metals for catalysis and bioinorganic chemistry. Then, he moved to LMU Munich and turned to the theoretical description of N-donor transition metal systems with focus on copper-dioxygen chemistry. In 2013, he was awarded with the Römer-Postdoc Prize.

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Mass Transfer in Reactive Bubbly Flows – A Single‐Bubble Study

Cited by 33 publications

References 35 publications

Numerical Characterization of the Bubble Rise Behavior in Viscoelastic Liquids

Numerical Characterization of the Bubble Rise Behavior in Viscoelastic Liquids

Laser‐Induced Fluorescence in Multiphase Systems

Reaction Systems for Bubbly Flows

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