@inproceedings{169c8cc5da684d67adefc740c6174ae2,
title = "Analysis of the tip leakage vortex dynamics with a slotted wing apparatus",
abstract = "In this paper we analyse the existence of the Crow instability in the tip leakage vortex at a first step toward flow control. The study is based on an idealized wind tunnel experiment in which a wing (playing the role of a compressor blade) is placed perpendicular to a flat plate (playing the role of the casing wall) at a certain gap distance from it. The study is a comparion between the flow thus obtained to that obtained when the effect of the flat plate is replaced by that of an image vortex generated by a second wing symmetric of the first one. The objective of the study is to examine the validity of the image vortex approach through the comparison of the vortex dynamics in the two flow configurations when the gap size is varied. The mean and unsteady flow are successively examined. Important differences are found when looking at the mean flow, most notably concerning the vortex trajectory, size and circulation. The unsteady flows are analysed with the objective of verifying the presence of the Crow instability in the tip leakage vortex. The Crow instability is however only observed in the image vortex flow. Comments on this result and on its interest for turbomachinery are given in the conclusion.",
author = "V. Brion and L. Jacquin",
year = "2011",
month = jan,
day = "1",
language = "English",
series = "9th European Conference on Turbomachinery: Fluid Dynamics and Thermodynamics, ETC 2011 - Conference Proceedings",
publisher = "Istanbul Technical University",
pages = "1057--1068",
editor = "M. Sen and G. Bois and M. Manna and T. Arts",
booktitle = "9th European Conference on Turbomachinery",
note = "9th European Conference on Turbomachinery: Fluid Dynamics and Thermodynamics, ETC 2011 ; Conference date: 21-03-2011 Through 25-03-2011",
}