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Modal structure of a supersonic under-expanded jet

Pérez Arroyo, Carlos and Daviller, Guillaume and Puigt, Guillaume and Airiau, Christophe Modal structure of a supersonic under-expanded jet. (2015) In: 22ème Congrès Français de Mécanique, 24 August 2015 - 28 August 2015 (Lyon, France).

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Official URL: http://hdl.handle.net/2042/57723

Abstract

Shock-cell noise is a particular noise that appears in imperfectly expanded jets. Under these expansion conditions a serie of expansions and compressions appears following a shock-cell type structure. The interaction between the vortices developed at the lip of the nozzle and the shock-cells generates what is known as shock-cell noise. This noise has the particularity to be propagated upstream with a higher intensity. This paper will focus on the azimuthal modal analysis of the jet and the near-field of a nonscreeching supersonic axisymmetrical under-expanded jet at Reynolds Re = UjDj=vj = 106. Large eddy simulations (LES) are carried out using the elsA code developed by ONERA and extended byCERFACS with high-order compact schemes.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to AFM editor. The original PDF of the article can be found at http://documents.irevues.inist.fr/handle/2042/57723
HAL Id:hal-01661629
Audience (conference):National conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Airbus (FRANCE)
French research institutions > Centre National des Etudes Spatiales - CNES (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > EDF (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Other partners > Total (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Météo France (FRANCE)
Other partners > SAFRAN (FRANCE)
Laboratory name:
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Deposited By: Christophe AIRIAU
Deposited On:12 Dec 2017 08:11

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