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Round Turbulent Air Jet Submitted to a Pulsed Coflow

Saudreau, Marc and Borée, Jacques and Bury, Yannick and Charnay, Georges Round Turbulent Air Jet Submitted to a Pulsed Coflow. (2004) AIAA Journal, vol. 42 (n° 2). pp. 280-288. ISSN 0001-1452

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Official URL: http://arc.aiaa.org/toc/aiaaj/42/2

Abstract

Mean and turbulent properties of an unsteady round air jet submitted to a pulsed coflowing airstream were studied from laser Doppler Velocimetry measurements. The ejection velocity of the jet is kept at a constant value, whereas the coflowing stream is pulsed. These measurements revealed that the unsteadiness leads to a longitudinal partition of the jet. Near the jet exit, the flow is a quasi-steady jet flow. Farther downstream, the flow is unsteady with the creation of a large and propagative structure in the jet flow. The objective of the study is comprehen- sive understanding of the main physical mechanisms induced by the coflow unsteadiness. Consequences of the entrainment process are also discussed.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By: Yannick Bury

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