Assessment of tomographic PIV in wall-bounded turbulence using direct numerical simulation data

de Silva, C. M., Baidya, R., Khashehchi, M. and Marusic, I. (2012) Assessment of tomographic PIV in wall-bounded turbulence using direct numerical simulation data. Experiments in Fluids, 52 2: 425-440. doi:10.1007/s00348-011-1227-7


Author de Silva, C. M.
Baidya, R.
Khashehchi, M.
Marusic, I.
Title Assessment of tomographic PIV in wall-bounded turbulence using direct numerical simulation data
Journal name Experiments in Fluids   Check publisher's open access policy
ISSN 0723-4864
1432-1114
Publication date 2012-02-01
Year available 2011
Sub-type Article (original research)
DOI 10.1007/s00348-011-1227-7
Volume 52
Issue 2
Start page 425
End page 440
Total pages 16
Place of publication Heidelberg, Germany
Publisher Springer
Collection year 2013
Language eng
Formatted abstract
Simulations of tomographic particle image velocimetry (Tomo-PIV) are performed using direct numerical simulation data of a channel flow at Reynolds number of Re τ = 934, to investigate the influence of experimental parameters such as camera position, seeding density, interrogation volume size and spatial resolution. The simulations employ camera modelling, a Mie scattering illumination model, lens distortion effects and calibration to realistically model a tomographic experiment. Results are presented for camera position and orientation in three-dimensional space, to obtain an optimal reconstruction quality. Furthermore, a quantitative analysis is performed on the accuracy of first and second order flow statistics, at various voxel sizes normalised using the viscous inner length scale. This enables the result to be used as a general reference for wall-bounded turbulent experiments. In addition, a ratio relating seeding density and the interrogation volume size is proposed to obtain an optimal reference value that remains constant. This can be used to determine the required seeding density concentration for a certain interrogation volume size.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes First published online 27 November 2011.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Non HERDC
 
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Created: Sat, 22 Mar 2014, 00:49:32 EST by Alex Fitzgerald on behalf of School of Mechanical and Mining Engineering