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Recent applications of STB and FlowFit - CUBE synthetic test case and large-scale impinging jet

Schanz, Daniel and Gesemann, Sebastian and Huhn, Florian and Manovski, Peter and Schröder, Andreas (2016) Recent applications of STB and FlowFit - CUBE synthetic test case and large-scale impinging jet. Annual DLR-ONERA MOTAR Meeting, Lille, France, May 24 – 25, 2016, 24. - 25. Mai 2016, Lille, Frankreich.

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The novel Lagrangian particle tracking method Shake-The-Box (STB) has been applied to a synthetic turbulent channel flow test case based on projections of particles which follow the DNS simulated flow towards four cameras. A benchmark test for 3D particle reconstruction and velocity field estimation has been carried out between the partners at ONERA and DLR-AS-EXV on two step, four step and fully time resolved particle image series from virtual cameras. Furthermore, an experimental set-up for measuring the flow of a large scale turbulent impinging jet has been explained. The set-up consists of six PCO.Dimax high-speed cameras operating between 1 and 3.9 kHz frame rate together with pulsed LED arrays illuminating HFSB in the jet flow of maximal velocities up to 18 m/s. The STB measurement domain consists of a wall-bounded volume covering a stream- and spanwise area of 500 x 500 x 200 mm³. A comprehensive set of relatively dense Lagrangian track data was reconstructed from several time resolved sequences. The data enables an accurate and high resolution measurement of the velocity, acceleration and Reynolds stresses. Furthermore, an interpolation algorithm regularized by the incompressible NS-equation named FlowFit has been applied resulting in the corresponding time-resolved 3D velocity and acceleration vector and pressure field volumes on a regular grid using the time series of irregularly distributed Lagrangian track data. With the present data coherent structures and their pressure dynamics close to the wall will be investigated based on synchronous flush mounted microphone measurements.

Item URL in elib:https://elib.dlr.de/104721/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Vortragender: Andreas Schröder
Title:Recent applications of STB and FlowFit - CUBE synthetic test case and large-scale impinging jet
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schanz, Danieldaniel.schanz (at) dlr.deUNSPECIFIED
Gesemann, Sebastiansebastian.gesemann (at) dlr.deUNSPECIFIED
Huhn, Florianflorian.huhn (at) dlr.deUNSPECIFIED
Schröder, AndreasAndreas.Schroeder (at) dlr.deUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Shake-The-Box, turbulent channel flow, impinging jet, HFSB
Event Title:Annual DLR-ONERA MOTAR Meeting, Lille, France, May 24 – 25, 2016
Event Location:Lille, Frankreich
Event Type:Workshop
Event Dates:24. - 25. Mai 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:24 Nov 2016 11:52
Last Modified:24 Nov 2016 11:52

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