Numerical Characterization of the Bubble Rise Behavior in Viscoelastic Liquids
Corresponding Author
Frauke Enders
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Correspondence: Frauke Enders ([email protected]), Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany.Search for more papers by this authorDavid Merker
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Search for more papers by this authorMarkus Kolano
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Search for more papers by this authorLutz Böhm
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Search for more papers by this authorMatthias Kraume
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Search for more papers by this authorCorresponding Author
Frauke Enders
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Correspondence: Frauke Enders ([email protected]), Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany.Search for more papers by this authorDavid Merker
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Search for more papers by this authorMarkus Kolano
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Search for more papers by this authorLutz Böhm
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Search for more papers by this authorMatthias Kraume
Technische Universität Berlin, Chair of Chemical & Process Engineering, Fraunhoferstrasse 33–36, 10587 Berlin, Germany
Search for more papers by this authorAbstract
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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