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

ISSN Imprimir: 1065-3090
ISSN On-line: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v24.i1-4.150
pages 229-246

A REVIEW ON THE INSTABILITIES ON A JET ISSUING NORMALLY INTO A CROSSFLOW

L.-E. Brizzi
Laboratoire d’etudes aerodynamiques, UMR 6609 SP2MI, Boulevard Marie et Pierre Curie, Teleport 2 BP 30179 86962, Futuroscope Chasseneuil, France; Université de Poitiers ENSMA, Futuroscope Chasseneuil, France
E. Foucault
Maître de conférence École Supérieure d'ingénieurs de Poitiers, France
J.-L. Bousgarbies
Chargé de Recherche CNRS, Laboratoire d'Études Aérodynamiques (UMR 6609), France

RESUMO

Visualizations by light amplification by stimulated emission of radiation (laser) tomographies have allowed the study of the flow resulting from the interaction between a circular jet and a cross boundary layer. This type of flow is dominated by the presence of many complex vortices that come from the recombining of the vorticity created in the injection tube and that create along the chamber floor. Results indicate in particular that the organization of the line of vortices, created on the boundary of the jet, depends on the existence of a focus located near the injection hole. Conditions of appearance of this instability have been specified, then a quantitative study of its main characteristics has been conducted by statistical analysis of video recordings.


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