Characterization of a Perforated Liner by Acoustic and Optical Measurements
Characterization of a Perforated Liner by Acoustic and Optical Measurements
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通过声学和光学测量表征穿孔衬管
DOI：
10.2514/6.2010-3765
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发表时间：
2010
影响因子：
3.2
通讯作者：
F. Bake
中科院分区：
文献类型：
--
作者：
Claus Heuwinkel;E. Piot;A. Fischer;I. Röhle;F. Micheli;L. Enghardt;F. Bake
在三个不同的测试设施中对偏压和掠射流下的穿孔衬管进行了全面研究。麦克风测量用于表征衬里的总体性能。激光多普勒风速测量和声学粒子图像测速测量用于研究孔口附近的流场。结果可以详细解释阻尼性能与流动结构之间的关系，以及不同测试设施和测量技术之间的全面比较。
A comprehensive study of a perforated liner under bias and grazing ow is performed in three di erent test facilities. Microphone measurements are used to characterize the general performance of the liner. Laser Doppler Anemometry and Acoustic Particle Image Velocimetry measurements are applied to study the ow eld in the vicinity of the ori ces. The results allow a detailed interpretation of the relation between the damping performance and the ow structures, as well as a comprehensive comparison between the di erent test facilities and measurement techniques.