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Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.5

ISSN Imprimer: 1065-3090
ISSN En ligne: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.2014005042
pages 355-382

COMBINED SPIV-PLIF AND ORTHOGONAL PLIF MEASUREMENTS: MIXING IN A PULSED JET IN CROSSFLOW

Lionel Thomas
Institut Pprime, CNRS. Universite de Poitiers. ENSMA. UPR 3346, Departement Fluides, Thermique, Combustion, Branche Fluides. Axe HydEE, SP2MI Teleport 2, Boulevard Marie et Pierre Curie. BP 30179, F86962 FUTUROSCOPE CHASSENEUIL Cedex
R. Vernet
Institut Pprime, CNRS. Universite de Poitiers. ENSMA. UPR 3346, Departement Fluides, Thermique, Combustion, Branche Fluides. Axe HydEE, SP2MI Teleport 2, Boulevard Marie et Pierre Curie. BP 30179, F86962 FUTUROSCOPE CHASSENEUIL Cedex
Camilo C. M. Rindt
Eindhoven University of Technology, Department of Mechanical Engineering, P.O.Box 513, 5600MB Eindhoven, The Netherlands
L. David
Laboratoire d'Etudes Aerodynamiques (LEA), UMR CNRS 6609, Blv. Marie & Pierre Curie, B.P. 30179, 86962 Futuroscope Chasseneuil Cedex, France

RÉSUMÉ

A simultaneous SPIV-PLIF measurement in water is used to study a pulsed jet in a crossflow. In the longitudinal plane of symmetry of the flow, the velocity fields are measured using Stereoscopic Particle Image Velocimetry (SPIV) and the concentration fields with Planar Laser Induced Fluorescence (PLIF). At the same time, a PLIF measurement is carried out in an orthogonal plane. To take into account the PLIF error sources (spatio-temporal laser intensity variations and out-of-plane fluorescence due to SPIV particles seeding), a special data processing technique has been developed. It allows the study of mixing at an early stage of the development of a pulsed jet in a crossflow. The studied jet is characterized by the Reynolds number Rej = 500 based on the mean jet velocity Uj = 1.67 cm/s, velocity ratio R = 1, sinusoidal forcing amplitude ratio Aj = 2, and the stroke ratio Sr = 2.23.


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