期刊
JOURNAL OF COMPUTATIONAL PHYSICS
卷 228, 期 13, 页码 4757-4772出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcp.2009.03.026
关键词
Perforated walls; Acoustic absorption; Large-Eddy Simulations; Time-domain acoustic modeling
资金
- CINES (Centre Informatique National pour I'Enseignement Superieur)
- BSC (Barcelona Supercomputing Center)
The study of the acoustic effect of perforated plates by Large-Eddy Simulations is reported. The ability of compressible Large-Eddy Simulations to provide data on the flow around a perforated plate and the associated acoustic damping is demonstrated. In particular, assumptions of existing models of the acoustic effect of perforated plate are assessed thanks to the Large-Eddy Simulations results. The question of modeling the effect of perforated plates is then addressed in the context of thermo-acoustic instabilities of gas turbine combustion chambers. Details are provided about the implementation, validation and application of a homogeneous boundary condition modeling the acoustic effect of perforated plates for compressible Large-Eddy Simulations of the flow in combustions chambers cooled by full-coverage film cooling. (c) 2009 Elsevier Inc. All rights reserved.
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