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Title of Journal: Exp Fluids

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Abbravation: Experiments in Fluids

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Springer Berlin Heidelberg

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DOI

10.1007/bf01685507

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1432-1114

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Intermittent corner separation in a linear compres

Authors: Ma Wei Ottavy Xavier Lu Lipeng Leboeuf Francis
Publish Date: 2013/06/02
Volume: 54, Issue: 6, Pages: 1546-
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Abstract

To gain a better knowledge of the mechanisms of corner separation and to obtain a database that could be used to calibrate large eddy simulation a detailed and accurate experimental investigation of the flow field in a linear compressor cascade has been carried out at a Reynolds number of 382 × 105 based on the blade chord and the inlet free stream velocity The experimental data include 1 the inlet flow conditions measured by onedimensional hotwire anemometry 2 the static pressure on the blade and the endwall measured by pressure taps 3 the outlet flow measured by a fivehole pressure probe and 4 the velocity field in the passage measured by twocomponent laser Doppler anemometry In this highly intermittent corner separation the points with bimodal histograms of velocity exist and mainly appear around the mean interface of separated flow and nonseparated flow This bimodal phenomenon is due to two aperiodic modes in the flow fieldPart of this work was performed under the AXIOOM project funded by the French National Research Agency ANR and the Natural Science Foundation of China NSFC The authors also wish to express the sincere gratitude to the support from the National Basic Research Program of China No 2012CB720205 and the NSFC No 50976010 and 51136003

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