Simulation and modelling of the waves transmission and generation in a stator blade row in a combustion-noise framework

Abstract : The combustion noise in aero-engines is known to have two different origins. First, the direct combustion noise is directly generated by the flame itself. Second, the indirect combustion noise is caused by the acceleration in the turbine stages, of entropy spots generated by the combustion. In both cases, the turbo-machinery is involved in the combustion-noise transmission and generation. Numerical simulations are performed in the present study to assess the global noise for a real aeronautical configuration. On the one hand, the acoustic and entropy transfer functions of an isolated blade row are obtained using two-dimensional unsteady simulations. The transfer functions of the blade row are compared with the model of Cumpsty and Marble that assumes an axially compact configuration. On the other hand, the acoustic and entropy sources coming from a combustion chamber are calculated from a three-dimensional Large Eddy Simulation (LES). This allows an evaluation of the error introduced by the model for the present combustion chamber using the previous numerical simulations. A significant error is found for the indirect combustion noise, whereas it stays reasonable for the direct one.
Document type :
Journal articles
Complete list of metadatas

Cited literature [27 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01101467
Contributor : Franck Nicoud <>
Submitted on : Thursday, January 8, 2015 - 4:36:49 PM
Last modification on : Friday, October 11, 2019 - 8:22:31 PM
Long-term archiving on : Thursday, April 9, 2015 - 10:41:13 AM

File

JSV.pdf
Files produced by the author(s)

Identifiers

Citation

Matthieu Leyko, Ignacio Duran, Stphane Moreau, Franck Nicoud, Thierry Poinsot. Simulation and modelling of the waves transmission and generation in a stator blade row in a combustion-noise framework. Journal of Sound and Vibration, Elsevier, 2014, 333 (23), pp.6090 - 6106. ⟨10.1016/j.jsv.2014.06.034⟩. ⟨hal-01101467⟩

Share

Metrics

Record views

504

Files downloads

210