Published August 19, 2022
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Computational aeroacoustics of a cold aerospike nozzle at off-design conditions
Description
The fluid flow and the aeroacoustic signature of an aerospike nozzle configuration are analyzed for one cold over-expanded configuration (Nozzle Pressure Ratio NPR3) and non-rotating inlet boundary conditions. Implicit Large Eddy Simulations (ILES) are performed, which provide data for far-field acoustic computations based on Ffowcs Williams-Hawkings equation (FWH). Power spectral density estimates in the far-field allow to identify screech and oscillations modes of the annular shock-cell structure as the main sources of sound
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IWDP_Berlin_Golliard_12082022.pdf
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(8.8 MB)
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