On the behavior of a large scale tumbling vortex flow submitted to compression
ESAIM. Proceedings, Tome 7 (1999), pp. 56-65
Cet article a éte moissonné depuis la source EDP Sciences
An analysis of the disruption of a compressed tumbling vortex is proposed here. This situation is typical of in-cylinder flows developing in combustion chambers of premixed spark ignition engines. In an inviscid fluid, we discuss analytically the motion of a point vortex of constant intensity submitted to compression in a time dependant rectangular domain. A relevant non-dimensional number comparing the vortex time scale and the compression time scale is obtained. We show that the compression unsteadiness is expected to delay the viscous response of the near-wall flow. The temporal evolution of a tumbling motion is then measured with high-speed particle image velocimetry in a model square piston compression machine. The experimental set-up and the measurement procedure are presented. The data provide a clear picture of the evolution and disruption of the compressed vortex. A physical analysis is proposed and we prove that elliptical instability and interaction with walls are the main mechanisms that lead to the generation of a three-dimensional unstructured velocity field.
Affiliations des auteurs :
J. Borée 1 ; D. Marc 1 ; R. Bazile 2 ; B. Lecordier 2
@article{EP_1999_7_a5,
author = {J. Bor\'ee and D. Marc and R. Bazile and B. Lecordier},
title = {On the behavior of a large scale tumbling vortex flow submitted to compression},
journal = {ESAIM. Proceedings},
pages = {56--65},
year = {1999},
volume = {7},
doi = {10.1051/proc:1999006},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.1051/proc:1999006/}
}
TY - JOUR AU - J. Borée AU - D. Marc AU - R. Bazile AU - B. Lecordier TI - On the behavior of a large scale tumbling vortex flow submitted to compression JO - ESAIM. Proceedings PY - 1999 SP - 56 EP - 65 VL - 7 UR - http://geodesic.mathdoc.fr/articles/10.1051/proc:1999006/ DO - 10.1051/proc:1999006 LA - en ID - EP_1999_7_a5 ER -
%0 Journal Article %A J. Borée %A D. Marc %A R. Bazile %A B. Lecordier %T On the behavior of a large scale tumbling vortex flow submitted to compression %J ESAIM. Proceedings %D 1999 %P 56-65 %V 7 %U http://geodesic.mathdoc.fr/articles/10.1051/proc:1999006/ %R 10.1051/proc:1999006 %G en %F EP_1999_7_a5
J. Borée; D. Marc; R. Bazile; B. Lecordier. On the behavior of a large scale tumbling vortex flow submitted to compression. ESAIM. Proceedings, Tome 7 (1999), pp. 56-65. doi: 10.1051/proc:1999006
Cité par Sources :