SCATTERING OF PLANE WAVES BY A CONSTRICTION

被引：0

作者：

Alenius, E. ^{[1
]}

Abom, M. ^{[1
]}

Fuchs, L.

机构：

[1] KTH, Marcus Wallenberg Lab Sound & Vibrat Res, Dept Aeronaut & Vehicle Engn, SE-10044 Stockholm, Sweden

来源：

PROCEEDINGS OF THE ASME TURBO EXPO 2011, VOL 7, PTS A-C | 2012年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Liner scattering of low frequency waves by an orifice plate has been studied using Large Eddy Simulation and an acoustic two-port model. The results have been compared to measurements with good agreement for waves coming from the downstream side. For waves coming from the upstream side the reflection is over-predicted, indicating that not enough of the acoustic energy is converted to vorticity at the upstream edge of the plate. Furthermore, the sensitivity to the amplitude of the acoustic waves has been studied, showing difficulties to simultaneously keep the amplitude low enough for linearity and high enough to suppress flow noise with the relatively short times series available in LES.

引用

页码：1043 / 1052

页数：10

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