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Material acceleration determination for high speed flows by means of Shake-The-Box multi-pulse particle tracking

Novara, Matteo and Schanz, Daniel and Gesemann, Sebastian and Schröder, Andreas (2016) Material acceleration determination for high speed flows by means of Shake-The-Box multi-pulse particle tracking. : PIV/PTV-based pressure determination PIV/PTV pressure challenge Uncertainty quantification, 02.06.2016, München, Deutschland.

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Abstract

The measurement of the instantaneous pressure field is of interest for many engineering applications ranging from noise generation to aerodynamic loads determination. Recently, several approaches based on particle image velocimetry data have been proposed in order to measure the fluid velocity material derivative and, subsequently, the local pressure gradient via the momentum equation (van Oudheusden 2013). The advantage of these approaches with respect to the use of pressure transducers or pressure sensitive paint resides in the non-intrusive nature of the particle imaging based technique able to deliver a high number of measurement points in a planar or even volumetric domain. Eulerian and pseudo-Lagrangian approaches have been investigated, where the acceleration is inferred starting from velocity vector fields obtained by cross-correlation of 3D reconstructed objects from tomographic-PIV (Tomo-PIV, Elsinga et al 2006). On the other hand, the Shake-the-Box particle tracking technique (STB, Schanz et al 2016) is capable of accurately reconstructing single particle tracks over long time sequences at high seeding density, avoiding the signal modulation and filtering introduced by the cross-correlation based methods and offering direct access to the Lagrangian properties of the fluid. The STB technique has been proposed for time-resolved data, typically available for low speed flows (<10

Item URL in elib:https://elib.dlr.de/104825/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Zeitschriftenbeitrag
Title:Material acceleration determination for high speed flows by means of Shake-The-Box multi-pulse particle tracking
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Novara, Matteomatteo.novara (at) dlr.deUNSPECIFIED
Schanz, Danieldaniel.schanz (at) dlr.deUNSPECIFIED
Gesemann, Sebastiansebastian.gesemann (at) dlr.deUNSPECIFIED
Schröder, Andreasandreas.schroeder (at) dlr.deUNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Shake-the-Box, multi pulse, high speed, base flow, material acceleration, pressue
Event Title:: PIV/PTV-based pressure determination PIV/PTV pressure challenge Uncertainty quantification
Event Location:München, Deutschland
Event Type:international Conference
Event Dates:02.06.2016
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:16 Dec 2016 11:51
Last Modified:16 Dec 2016 11:51

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