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Particle tracking of inertial and Lagrangian particles in isotropic turbulence flows

Perez-Munuzuri, Vicente and Garaboa-Paz, Daniel and Huhn, Florian (2016) Particle tracking of inertial and Lagrangian particles in isotropic turbulence flows. EuHIT Conference, 02.-03. May 2016, Göttingen, Germany.

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Official URL: https://www.euhit.org/events/euhit-turbulence-conference/programme


The motion of contracting and expanding bubbles in an incompressible chaotic flow is analyzed in terms of the Finite-Time Lyapunov Exponents. The viscous forces acting on the bubble surface depend not only on the relative acceleration but also on the time-dependence of the bubble volume which is modeled by the Rayleigh-Plesset equation. The effect of bubbles coalescence on the coherent structmes that develop in the flow is studied using a simplified bubble merger model. Contraction and expansion of the bubbles is favored in the vicinity of the coherent structures. Mixing patterns were found to depend heavily on merging and on the time-dependent volume of the bubbles.

Item URL in elib:https://elib.dlr.de/104488/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Book of Abstract
Title:Particle tracking of inertial and Lagrangian particles in isotropic turbulence flows
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Perez-Munuzuri, VicenteUniversity of Santiago de CompastelaUNSPECIFIED
Garaboa-Paz, DanielUniversity of Santiago de CompastelaUNSPECIFIED
Huhn, Florianflorian.huhn (at) dlr.deUNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Lagrangian particles, isotropic turbulence flows, FTLE
Event Title:EuHIT Conference
Event Location:Göttingen, Germany
Event Type:international Conference
Event Dates:02.-03. May 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Bachmann, Barbara
Deposited On:18 Jul 2016 10:11
Last Modified:19 Jul 2016 14:04

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