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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2018

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

Résumé

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 circulation. The scaling law was found to be valid for both an integrated nozzle 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.
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hal-01864997 , version 1 (30-08-2018)

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Lionel Hirschberg, S. J. Hulshoff, Jean Collinet, Christophe Schram, Thierry Schuller. Vortex nozzle interaction in solid rocket motors: A scaling law for upstream acoustic response. Journal of the Acoustical Society of America, 2018, 144 (1), pp.EL46-EL51. ⟨10.1121/1.5046441⟩. ⟨hal-01864997⟩
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