Sound propagation characteristic of Phononic Crystals pipeline with Periodic vibration isolation mass

摘要

Fluid filled pipeline systems have wide applications in nuclear industry, such as purification, ventilation, heat transfer and cooling systems [1]. The connected Rotor dynamic equipment and discontinuous structure is responsible for the generation of undesired structure vibration, fluid pulsation and Fluid structure interaction (FS1) [2][3]. Thus, the control of noise and vibration propagation in pipeline system is a tough and challenging issue.