Large-scale structures forming in a cross flow : particle image velocimetry conditional analysis

• Autorzy: Camussi R. , Stella A. , Guj G. , Kowalewski T. A.
• Konferencja: Euromech 406 colloquium on Image Processing Methods in Applied Mechanics (6-8.05.1999 ; Warsaw, Poland)
• Języki publikacji: EN

Abstrakty

EN

A conditional Particle Image Velocimetry (PIV) acquisition technique and averaging procedure are developed to study coherent structures formed by the interaction between a jet and a cross-stream. The experiment is constructed in a water tunnel, the water transversal jet is perturbed by a mechanical device. Measurements are performed at reynolds number 100 and cross-flow velocity ratio ranging from 2.0 to 4.5. Sequences of images are acquired synchronously to the perturbation so that a statistical process may be applied to obtain average velocity and vorticity in a selected cross-section of the flow. The averaged fields and the instantaneous images together with flow visualizations by Laser Induced Fluorescence (LIF) technoque are used to interpret behaviour of the large-scale vortices generated in the cross-flow experiment.

Słowa kluczowe

EN

PIV; cross flow; coherent flow structures

• Wydawca: Institute of Information Technology of the Warsaw University of Life Sciences – SGGW
• Czasopismo: Machine Graphics and Vision
• Rocznik: 1999
• Tom: Vol. 8, No. 4
• Strony: 579--595
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Camussi R.

autor

Stella A.

autor

Guj G.

autor

Kowalewski T. A.

• Dipartimento di Ingegneria Meccanica e Industriale Univesita Roma Tre, Via della Vasca Navale 79, I-00146 Roma, Italy