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Validation and Application of Tomographic Particle Image Velocimetry for Large Scale Convective Air Flow

Kühn, Matthias and Ehrenfried, Klaus and Bosbach, Johannes and Wagner, Claus (2009) Validation and Application of Tomographic Particle Image Velocimetry for Large Scale Convective Air Flow. In: 6th International Symposium on Turbulence and Shear Flow Phenomena. 6th International Symposium on Turbulence and Shear Flow Phenomena, 2009-06-22 - 2009-06-24, Seoul. (In Press)

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Official URL: http://www.tsfp6.org

Abstract

Tomographic Particle Image Velocimetry for large scale applications (LST-PIV) is applied to a convection cell to measure the large scale flow structures in forced convection. The technique is capable to capture the three-dimensional instantaneous flow field in a measurement volume. In order to validate the implementation of the Tomographic PIV algorithm and to demonstrate that the large scale flow structure in the convection cell can be predicted properly, the data is compared to planar PIV data. The LST-PIV reveals the same global flow structure as with planar PIV. The rms value of the difference between the LST- and planar PIV data amounts to 0.0088 m/s whereas the volume averaged velocity in the measurement volume is 0.11 m/s. However, small regions exist in which the differences are as large as 0.0182 m/s. It is concluded that the larger differences between the two sets of data are mainly caused by the not yet fully converged flow statistics and to a small extend by disturbance of the inflow due to particle injection.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Validation and Application of Tomographic Particle Image Velocimetry for Large Scale Convective Air Flow
Authors:
AuthorsInstitution or Email of Authors
Kühn, MatthiasUNSPECIFIED
Ehrenfried, KlausUNSPECIFIED
Bosbach, JohannesUNSPECIFIED
Wagner, ClausUNSPECIFIED
Date:22 June 2009
Journal or Publication Title:6th International Symposium on Turbulence and Shear Flow Phenomena
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Status:In Press
Keywords:Tomographic PIV, Large scale PIV, Validation, LED light source, Forced convection
Event Title:6th International Symposium on Turbulence and Shear Flow Phenomena
Event Location:Seoul
Event Type:international Conference
Event Dates:2009-06-22 - 2009-06-24
HGF - Research field:other
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignement
DLR - Research theme (Project):L -- no assignement
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Matthias Kühn
Deposited On:06 Jul 2009 14:29
Last Modified:02 Nov 2009 15:03

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