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Dense Lagrangian particle tracking in homogeneous turbulence

Huhn, Florian and Schanz, Daniel and Schröder, Andreas and Garaboa-Paz, Daniel and Perez-Munuzuri, Vicente and Lawson, J. and Bodenschatz, E. (2017) Dense Lagrangian particle tracking in homogeneous turbulence. 12th International Symposium on Particle Image, 19.-21. Juni 2017, Busan, Korea.

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We present measurements of dense fields of fluid particle trajectories in homogeneous turbulence at Re lambda -270 and -350 in a von Karman flow between two counter-rotating propellers. Applying the Shake-The-Box particle tracking algorithm, we are able to instantaneously track up to 100.000 particles in a volume of 50x50x15mm3. The mean inter-particle distance is lower than 7 Kolmogorov lengths. An interpolation scheme (FlowFit) with inherent physical constraints is used to interpolate the scattered velocity and acceleration data onto a Cartesian grid, in order to recover the smallest flow scales. In the presentation, we show velocity and acceleration statistics, compute the energy dissipation rate directly and compare it to indirect approaches.

Item URL in elib:https://elib.dlr.de/118051/
Document Type:Conference or Workshop Item (Speech)
Additional Information:USB-Stick of Abstract; ISPIV-165
Title:Dense Lagrangian particle tracking in homogeneous turbulence
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schröder, AndreasUNSPECIFIEDhttps://orcid.org/0000-0002-6971-9262UNSPECIFIED
Garaboa-Paz, DanielUniversity of Santiago de CompastelaUNSPECIFIEDUNSPECIFIED
Perez-Munuzuri, VicenteUniversity of Santiago de CompastelaUNSPECIFIEDUNSPECIFIED
Lawson, J.Max-Planck-Institute for Dynamics and Self-Organization, GöttingenUNSPECIFIEDUNSPECIFIED
Bodenschatz, E.Max-Planck-Institute for Dynamics and Self-Organization, GöttingenUNSPECIFIEDUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Lagrangian Particle Tracking, turbulence
Event Title:12th International Symposium on Particle Image
Event Location:Busan, Korea
Event Type:international Conference
Event Dates:19.-21. Juni 2017
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 (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
Deposited By: Bachmann, Barbara
Deposited On:11 Jan 2018 08:48
Last Modified:11 Jan 2018 08:48

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