The strong development of Particle Image Velocimetry in the last few years has opened a new field for the experimental study of turbulent flows. The main importance of PIV with respect to classical point measurement techniques is the ability of producing instantaneous maps of the velocity field, giving information about organized motions and their relation to the skin friction growth and turbulence production. At the Politecnico di Torino Aerodynamic Laboratory a large number of students and researchers is involved in PIV studies on the dynamics of the organized motions in near wall turbulent flows and on their control [6, 7, 9, 10, 15]. In the present paper swirling motions in streamwise-wall-normal planes are described, with reference in particular to the rarely commented positive swirling motions.
PIV Study of Near Wall Organized Motions / Diederichs, V; Lapolla, M; Lorefice, L; Malvano, R; Pralio, B; Spazzini, PIER GIORGIO; Onorato, M; Haigermoser, C; Vesely, L.. - (2006), pp. ?-?. (Intervento presentato al convegno 25th ICAS Congress tenutosi a Hamburg, Germany nel 2006).
PIV Study of Near Wall Organized Motions
SPAZZINI, PIER GIORGIO;
2006
Abstract
The strong development of Particle Image Velocimetry in the last few years has opened a new field for the experimental study of turbulent flows. The main importance of PIV with respect to classical point measurement techniques is the ability of producing instantaneous maps of the velocity field, giving information about organized motions and their relation to the skin friction growth and turbulence production. At the Politecnico di Torino Aerodynamic Laboratory a large number of students and researchers is involved in PIV studies on the dynamics of the organized motions in near wall turbulent flows and on their control [6, 7, 9, 10, 15]. In the present paper swirling motions in streamwise-wall-normal planes are described, with reference in particular to the rarely commented positive swirling motions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
