Full 3D correlation tensor computed from double field stereoscopic PIV in a high Reynolds number turbulent boundary layer |
| |
Authors: | Email author" target="_blank">Jean-Marc?FoucautEmail author Sebastien?Coudert Michel?Stanislas Joel?Delville |
| |
Institution: | 1.Univ Lille Nord de France,Lille,France;2.ECLille, LML,Villeneuve d’Ascq,France;3.CNRS,Villeneuve d’Ascq,France;4.Départment Fluides,Institut Pprime, CNRS, Univ. de Poitiers-ENSMA, UPR 3346,Poitiers Cedex,France |
| |
Abstract: | 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). |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|