Full 3D correlation tensor computed from double field stereoscopic PIV in a high Reynolds number turbulent boundary layer

• Published in: Experiments in fluids Vol. 50; no. 4; pp. 839 - 846
• Main Authors: Foucaut, Jean-Marc, Coudert, Sebastien, Stanislas, Michel, Delville, Joel
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.04.2011; Springer; Springer Verlag (Germany)
• Subjects: Boundary layer and shear turbulence; Computation; Computational fluid dynamics; Correlation; Engineering; Engineering Fluid Dynamics; Engineering Thermodynamics; Exact sciences and technology; Fluid dynamics; Fluid flow; Fluid- and Aerodynamics; Fluids; Fundamental areas of phenomenology (including applications); Heat and Mass Transfer; Instrumentation for fluid dynamics; Physics; Research Article; Stereoscopic; Turbulence; Turbulent flow; Turbulent flows, convection, and heat transfer; France, Paris; Hairpin Vortex; Turbulent Boundary Layer; Wall Distance; Particle Image Velocimetry System; Particle Image Velocimetry; Large Reynolds number; Test facilities; Turbulent flow; Stereoscopy; Spatial correlation; Particle image velocimetry; Experimental study; Velocity measurement; Boundary layers; Turbulence structure; VELOCITY; PARTICLE IMAGE VELOCIMETRY; FUNDAMENTALS; CHANNEL FLOW; REGION
• ISSN: 0723-4864; 1432-1114
• DOI: 10.1007/s00348-010-0928-7

The turbulence structure near a wall is a very active subject of research and a key to the understanding and modeling of this flow. Many researchers have worked on this subject since the fifties Hama et al. (J Appl Phys 28:388–394, 1957 ). One way to study this organization consists of computing the spatial two-point correlations. Stanislas et al. (C R Acad Sci Paris 327(2b):55–61, 1999 ) and Kahler (Exp Fluids 36:114–130, 2004 ) showed that double spatial correlations can be computed from stereoscopic particle image velocimetry (SPIV) fields and can lead to a better understanding of the turbulent flow organization. The limitation is that the correlation is only computed in the PIV plane. The idea of the present paper is to propose a new method based on a specific stereoscopic PIV experiment that allows the computation of the full 3D spatial correlation tensor. The results obtained are validated by comparison with 2D computation from SPIV. They are in very good agreement with the results of Ganapthisubramani et al. (J Fluid Mech 524:57–80, 2005a ).