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23. How Fluid Pseudoplasticity and Elasticity Affect Propeller Flows in Biogas Fermenters.

Author

Kolano, Markus, Ohnmacht, Benjamin, Lemmer, Andreas, and Kraume, Matthias

Subjects
COMPUTATIONAL fluid dynamics, INTERIM governments, PSEUDOPLASTIC fluids, VISCOELASTICITY, BIOGAS, PROPELLERS
Abstract

Mixing in biogas fermenters is complex due to the non‐Newtonian rheology of biogenic substrates, which exhibit both pseudoplasticity and elasticity. It is yet unclear how these non‐Newtonian properties affect propeller flows and the mixing behavior in fermenters. Therefore, propeller flows in Newtonian as well as shear‐thinning inelastic and elastic fluids are compared numerically and validated against particle image velocity (PIV) data. Elastic normal stresses lead to an increase of pumping rates in the laminar regime and a suppression of the formation of a propeller jet in the transitional regime. Thus, flow rates are severely overestimated by the inelastic, shear‐thinning model in this regime. The results indicate that elasticity is critical for an accurate modeling of flows of biogenic substrates. [ABSTRACT FROM AUTHOR]

Published
2024
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27. Feststofftransport in Rohrleitungen

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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28. Strömungen an ebenen Platten

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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29. Disperse Systeme

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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33. Strömungen in Rohrleitungen

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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34. Wärme- und Stoffübergangstheorien

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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36. Grundlagen der Transportprozesse

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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37. Blasensäulen

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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38. Mischen und Rühren

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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39. Strömungsmaschinen

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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40. Thermische Trocknung fester Stoffe

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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41. Wirbelschichtapparate

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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42. Füllkörper- und Packungskolonnen

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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43. Rieselfilmapparate

Author

Kraume, Matthias, Kraume, Matthias, Böhm, Lutz, With Contrib. by, Schulz, Joschka M., With Contrib. by, Krakau, Frederic, With Contrib. by, and Drews, Anja, With Contrib. by

Published
2020
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44. Chemical Reactions at Freely Ascending Single Bubbles

Author

Böhm, Lutz, Merker, David, Strassl, Florian, Herres-Pawlis, Sonja, Oßberger, Martin, Klüfers, Peter, Schindler, Siegfried, Guhathakurta, Jajnabalkya, Grottke, Daniel, Simon, Sven, Rinke, Günter, Hlawitschka, Mark, von Kameke, Alexandra, Kexel, Felix, Schlüter, Michael, Gast, Sebastian, Tuttlies, Ute, Nieken, Ulrich, Hillenbrand, Dennis, Marschall, Holger, Weiner, Andre, Bothe, Dieter, Kraume, Matthias, Thess, André, Series Editor, Moreau, René, Founding Editor, Schlüter, Michael, editor, Bothe, Dieter, editor, Herres-Pawlis, Sonja, editor, and Nieken, Ulrich, editor

Published
2021
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45. Investigation of Reactive Bubbly Flows in Technical Apparatuses

Author

Gast, Sebastian, Tuttlies, Ute, Laurini, Larissa, Kexel, Felix, Merker, David, Böhm, Lutz, Taborda, Manuel A., Sommerfeld, Martin, Kraume, Matthias, Schlüter, Michael, Herres-Pawlis, Sonja, Nieken, Ulrich, Thess, André, Series Editor, Moreau, René, Founding Editor, Schlüter, Michael, editor, Bothe, Dieter, editor, Herres-Pawlis, Sonja, editor, and Nieken, Ulrich, editor

Published
2021
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