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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Abstract
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/ | ||||||||||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||||||
Additional Information: | USB-Stick of Abstract; ISPIV-165 | ||||||||||||||||||||||||||||||||
Title: | Dense Lagrangian particle tracking in homogeneous turbulence | ||||||||||||||||||||||||||||||||
Authors: |
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Date: | 2017 | ||||||||||||||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||||||
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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