Spatial Correlation from the SPIV Database of the WALLTURB Experiment
An original experiment has been performed in the frame of the WALLTURB EC project. In this experiment a specific set-up of SPIV allows to compute the full 3D tensor of velocity spatial correlation by using the homogeneity of the flow. The two-point correlations are tools to study the coherence of a flow. Stanislas et al. (C. R. Acad. Sci. Paris 2b 327:55–61, 1999) and Kahler (Exp. Fluids 36:114–130, 2004) showed that double spatial correlations, computed from Particle Image Velocimetry (PIV) fields, allow a better understanding of the turbulent flow organization.
KeywordsParticle Image Velocimetry Turbulent Boundary Layer Particle Image Velocimetry System Stereoscopic Particle Image Velocimetry Streamwise Velocity Component
The authors would like to acknowledge F. Benyoucef and D. Krolak who did a significant contribution to the development of the correlation computation software. This work has been performed under the WALLTURB project. WALLTURB (A European synergy for the assessment of wall turbulence) is funded by the CEC under the 6th framework program (CONTRACT No: AST4-CT-2005-516008).
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