Flow-Sound Interaction Mechanisms and Control Strategies

流激声共振是许多工程应用中的设计问题，例如热交换器、锅炉设备、蒸汽机和管道系统中的管束。它发生在海崖体（如圆柱体）周围的流动以共振方式振动时。这通常导致产生严重的噪声问题和/或过度振动。由于声学共振现象尚未完全了解，它可能是危险的不可预测的，并可能导致灾难性的故障。随着对能源需求的不断增长，现有电厂的扩建项目正在成为普遍的做法。这意味着构造具有比目前使用的更高流速的更大的热交换器管束，这反过来将使热交换器更容易受到噪声和振动问题的影响。考虑到现有的知识水平的流声相互作用的换热器管束，它是非常复杂的预测发生声共振在设计阶段。

Flow-excited acoustic resonance is a design concern in many engineering applications such as tube bundles in heat exchangers, boiler plants, turbomachines, and piping systems. It occurs when the flow surrounding a bluff body, such as a circular cylinder, vibrates in a resonant manner. This often leads to the generation of acute noise problems and/or excessive vibrations. Since the acoustic resonance phenomenon is not yet fully understood, it can be dangerously unpredictable and may cause catastrophic failures. With the ever increasing demand on energy, expansion projects of existing power plants are becoming common practice. This means the construction of larger heat exchangers tube bundles with higher flow rates than what are currently used which, in turn, would make the heat exchangers more susceptible to noise and vibration problems. Considering the existing level of knowledge of flow-sound interaction in heat exchangers tube bundles it is extremely complex to predict the occurrence of acoustic resonance during the design stage.