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Weiss, Stephan and Schanz, Daniel and Erdogdu, Ahmed Oguzhan and Schröder, Andreas and Bosbach, Johannes (2022) Investigation of turbulent superstructures in Rayleigh-'enard convection by Lagrangian particle tracking of fluorescent microspheres. In: Proceeding of the 20th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics (212), pp. 2334-2349. 20th International Symposium on Application of Laser and Imaging Techniques to Fluid Mechanics 2022, 2022-07-11 - 2022-07-14, Lissabon, Portugal. ISBN 978-989-53637-0-4.
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Abstract
We present spatially and temporally resolved velocity and acceleration measurements of turbulent Rayleigh-B'enard convection (RBC) in fluid samples with large lateral aspect ratios of 8 and 16 at Pr =7 and Rayleigh-Numbers up to 1.3x10^7. Herewith, we applied the "Shake-The-Box" (STB) Lagrangian particle tracking (LPT) algorithm, which allowed us to simultaneously track more than 300,000 particles and hence to study the resulting turbulent structures in the Eulerian and Lagrangian frames. We focus our investigation on the morphology and the dynamics of the large scale pattern, i.e., the turbulent superstructure.
| Item URL in elib: | https://elib.dlr.de/189398/ | ||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||
| Title: | Investigation of turbulent superstructures in Rayleigh-'enard convection by Lagrangian particle tracking of fluorescent microspheres | ||||||||||||||||||||||||
| Authors: |
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| Date: | July 2022 | ||||||||||||||||||||||||
| Journal or Publication Title: | Proceeding of the 20th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics | ||||||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||||||
| Open Access: | Yes | ||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||
| Page Range: | pp. 2334-2349 | ||||||||||||||||||||||||
| Series Name: | Conference Proceedings online | ||||||||||||||||||||||||
| ISBN: | 978-989-53637-0-4 | ||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||
| Keywords: | Rayleigh Benard Convection, Turbulence, Pattern Formation, Particle Tracking, Shake-The-Box, FLowFit | ||||||||||||||||||||||||
| Event Title: | 20th International Symposium on Application of Laser and Imaging Techniques to Fluid Mechanics 2022 | ||||||||||||||||||||||||
| Event Location: | Lissabon, Portugal | ||||||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||||||
| Event Start Date: | 11 July 2022 | ||||||||||||||||||||||||
| Event End Date: | 14 July 2022 | ||||||||||||||||||||||||
| Organizer: | IST, Lissabon, Portugal | ||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||||||||||||||
| HGF - Program Themes: | Efficient Vehicle | ||||||||||||||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||||||||||||||
| DLR - Program: | L EV - Efficient Vehicle | ||||||||||||||||||||||||
| DLR - Research theme (Project): | L - Virtual Aircraft and Validation | ||||||||||||||||||||||||
| Location: | Göttingen | ||||||||||||||||||||||||
| Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Experimental Methods, GO | ||||||||||||||||||||||||
| Deposited By: | Micknaus, Ilka | ||||||||||||||||||||||||
| Deposited On: | 13 Dec 2022 14:04 | ||||||||||||||||||||||||
| Last Modified: | 24 Apr 2024 20:50 |
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