Skip to Main content Skip to Navigation
Conference papers

ANALYSIS AND LOW ORDER MODELING OF THE ACOUSTIC DAMPING FOR HIGH-FREQUENCY COMBUSTION INSTABILITIES PREDICTION IN LIQUID ROCKET ENGINES

Abstract : The phenomena liable for acoustic damping in thermo-acoustic instabilities in liquid rocket engines are investigated. Modelings to account for the nozzle impedance, in compact hypothesis, and for the visco-thermal losses at walls are derived according to the Galerkin framework, where pressure variations are decomposed over the acoustic eigenmodes. Models are implemented in a low order tool and compared successfully to analytic and numerical predictions. The turbulent/acoustic interaction, responsible for acoustic absorption at the jets, is reviewed, and an in-progress strategy is presented.
Document type :
Conference papers
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03676560
Contributor : Alexandre Fougnie Connect in order to contact the contributor
Submitted on : Tuesday, May 24, 2022 - 10:14:20 AM
Last modification on : Wednesday, June 15, 2022 - 8:41:47 AM

File

238_FOUGNIE.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-03676560, version 1

Citation

Alexandre Fougnie, Thomas Schmitt, Sebastien Ducruix. ANALYSIS AND LOW ORDER MODELING OF THE ACOUSTIC DAMPING FOR HIGH-FREQUENCY COMBUSTION INSTABILITIES PREDICTION IN LIQUID ROCKET ENGINES. Space Propulsion 2022, May 2022, Estoril, Portugal. ⟨hal-03676560⟩

Share

Metrics

Record views

0

Files downloads

0