公开(公告)号：US20050194206A1

公开(公告)日：2005-09-08

申请号：US11068980

申请日：2005-03-02

申请人： Marco Rose ,  Fredi Holste ,  Frank Arnold ,  Alastair Moore

发明人： Marco Rose ,  Fredi Holste ,  Frank Arnold ,  Alastair Moore

IPC分类号： G10K11/178 ,  G10K15/04 ,  E04F17/04 ,  F02K11/00 ,  B64D33/02

CPC分类号： G10K15/04 ,  G10K11/178 ,  G10K2210/3212

摘要： A device for simulating sound produced by certain equipment, for example a rotor-stator arrangement of a turbomachine, or for generation of opposing sound fields for active sound control, including active sound reduction and active sound amplification, comprises flow obstacles (2) provided in a flow duct (1) flown by a fluid at which vortices (5, 6) are shed at a certain frequency depending on the shape and size of the flow obstacles and the velocity of flow. The quantity and spatial arrangement of the flow obstacles is selected such that a periodically spatially and temporally changing pressure field for the excitation of a sound field (8) of a certain modal content is produced by the entirety of the vortices shed. This sound field reacts synchronizingly on the vortex shedding. The resonant circuit so formed, whose vortex shedding frequency is in the range of the resonant frequency of the sound field to be excited, is the sound source.

摘要翻译： 用于模拟由某些设备产生的声音的装置，例如涡轮机的转子 - 定子装置或用于产生用于主动声音控制的相对的声场（包括主动声音降低和主动声音放大）的装置包括流动障碍物（2） 根据流动障碍物的形状和尺寸以及流速，通过流体（1）流过涡流（5,6）以一定频率排出的流体。 选择流动障碍物的数量和空间布置，使得通过整个涡流流出产生用于激发某一模态内容的声场（8）的周期性空间和时间上变化的压力场。 这个声场在涡流脱落上同步地反应。 这样形成的涡流脱落频率在待激励的声场的谐振频率的范围内的谐振电路是声源。

公开(公告)号：US07516815B2

公开(公告)日：2009-04-14

申请号：US11068980

申请日：2005-03-02

申请人： Marco Rose ,  Fredi Holste ,  Frank Arnold ,  Alastair D Moore

发明人： Marco Rose ,  Fredi Holste ,  Frank Arnold ,  Alastair D Moore

IPC分类号： E04F17/04

CPC分类号： G10K15/04 ,  G10K11/178 ,  G10K2210/3212

摘要： A device for simulating sound produced by certain equipment, for example a rotor-stator arrangement of a turbomachine, or for generation of opposing sound fields for active sound control, including active sound reduction and active sound amplification, comprises flow obstacles (2) provided in a flow duct (1) flown by a fluid at which vortices (5, 6) are shed at a certain frequency depending on the shape and size of the flow obstacles and the velocity of flow. The quantity and spatial arrangement of the flow obstacles is selected such that a periodically spatially and temporally changing pressure field for the excitation of a sound field (8) of a certain modal content is produced by the entirety of the vortices shed. This sound field reacts synchronizingly on the vortex shedding. The resonant circuit so formed, whose vortex shedding frequency is in the range of the resonant frequency of the sound field to be excited, is the sound source.

摘要翻译： 用于模拟由某些设备产生的声音的装置，例如涡轮机的转子 - 定子装置或用于产生用于主动声音控制的相对的声场（包括主动声音降低和主动声音放大）的装置包括流动障碍物（2） 根据流动障碍物的形状和尺寸以及流速，通过流体（1）流过涡流（5,6）以一定频率排出的流体。 选择流动障碍物的数量和空间布置，使得通过整个涡流流出产生用于激发某一模态内容的声场（8）的周期性空间和时间上变化的压力场。 这个声场在涡流脱落上同步地反应。 这样形成的涡流脱落频率在待激励的声场的谐振频率的范围内的谐振电路是声源。