Volume 15, Issue 1 pp. 493-494
Section 10
Free Access

Local and instantaneous turbulence modification induced by small spherical bubbles

Claudio Santarelli

Corresponding Author

Claudio Santarelli

Institute of Fluid Mechanics, Technische Universität Dresden, George-Bähr-Str. 3c, 01062 Dresden, Germany

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Jean Roussel

Jean Roussel

Institute of Fluid Mechanics, Technische Universität Dresden, George-Bähr-Str. 3c, 01062 Dresden, Germany

Ecole Polytechnique, Route de Saclay, 91128 Palaiseau, France

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Jochen Fröhlich

Jochen Fröhlich

Institute of Fluid Mechanics, Technische Universität Dresden, George-Bähr-Str. 3c, 01062 Dresden, Germany

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First published: 21 October 2015

Abstract

The paper provides insight into the local and instantaneous turbulence modification induced by small spherical bubbles in an upward directed turbulent channel flow. This is accomplished by analyzing each term of the transport equation of the local and instantaneous kinetic energy for bubbly flows and dedicated flow visualizations are provided to address the mechanisms involved in the turbulence modification. (© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)

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