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Vortex nozzle interaction in solid rocket motors: A scaling law for upstream acoustic response

Hirschberg, Lionel and Hulshoff, Steven J.K. and Collinet, Jean and Schram, Christophe and Schuller, Thierry Vortex nozzle interaction in solid rocket motors: A scaling law for upstream acoustic response. (2018) The Journal of the Acoustical Society of America (JASA), 144 (1). EL46-EL51. ISSN 0001-4966

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Official URL: https://doi.org/10.1121/1.5046441


In solid rocket motors, vortex nozzle interactions can be a source of large-amplitude pressure pulsations. Using a two-dimensional frictionless flow model, a scaling law is deduced, which describes the magnitude of a pressure pulsation as being proportional to the product of the dynamic pressure of the upstream main flow and of vortex circu- lation. The scaling law was found to be valid for both an integrated noz- zle with surrounding cavity and a nozzle geometry without surrounding cavity that forms a right angle with the combustion chamber side wall. Deviations from the scaling law only occur when unrealistically strong circulations are considered.

Item Type:Article
HAL Id:hal-01864997
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > ArianeGroup (FRANCE)
Other partners > Delft University of Technology - TU Delft (NETHERLANDS)
Other partners > von Karman Institute for Fluid Dynamics - VKI (BELGIUM)
Laboratory name:
Deposited On:30 Aug 2018 14:27

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