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Schanz, Daniel and Schröder, Andreas and Heine, Benjamin and Dierksheide, Uwe (2012) Flow structure identification in a high-resolution tomographic PIV data set of the flow behind a backward facing step. 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 2012-07-09 - 2012-07-12, Lisbon, Portugal.
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Official URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2012/program.asp
Abstract
The flow behind a backward facing step of 6 mm in height has been investigated by means of high-resolution tomographic PIV. The shedding of vortices was stabilized by acoustic excitation, enabling phase-locked measurements of the flow field in a volume of 70x95x7 mm3. The gathered vector volumes with a vector spacing of approx. 0.25 mm in each direction were investigated by the method of conditional averaging. Basic flow structures, related to Q2 and Q4-events were extracted and their development in time was characterized, using methods of joint probability density functions of the fluctuations and of the invariants of the velocity gradient tensor.
| Item URL in elib: | https://elib.dlr.de/73469/ | ||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||||||||||||||
| Title: | Flow structure identification in a high-resolution tomographic PIV data set of the flow behind a backward facing step | ||||||||||||||||||||
| Authors: |
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| Date: | 2012 | ||||||||||||||||||||
| Refereed publication: | No | ||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||
| Page Range: | pp. 1-12 | ||||||||||||||||||||
| Series Name: | Conference Proceedings online | ||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||
| Keywords: | Tomographic PIV, backward facing step, conditional averaging | ||||||||||||||||||||
| Event Title: | 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics | ||||||||||||||||||||
| Event Location: | Lisbon, Portugal | ||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||
| Event Start Date: | 9 July 2012 | ||||||||||||||||||||
| Event End Date: | 12 July 2012 | ||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||||||||||
| HGF - Program Themes: | Aircraft Research (old) | ||||||||||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||||||||||
| DLR - Program: | L AR - Aircraft Research | ||||||||||||||||||||
| DLR - Research theme (Project): | L - Simulation & Validation (old) | ||||||||||||||||||||
| Location: | Göttingen | ||||||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Helicopters Institute of Aerodynamics and Flow Technology > Experimental Methods | ||||||||||||||||||||
| Deposited By: | Micknaus, Ilka | ||||||||||||||||||||
| Deposited On: | 19 Jul 2012 09:38 | ||||||||||||||||||||
| Last Modified: | 24 Apr 2024 19:39 |
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