摘要
本文利用声波在管中粘滞阻尼方面的理论,研究了存在气流时穿孔板结构的声传递特性。研究表明:穿孔板的声阻与孔板厚度、孔径、穿孔数目、声波频率和气流速度等因素有关。
Based on the theory of the viscous damping of sound wave in tube, the acoustic transmission property of the perforated plate in vactive muffler is analyzed in the presence of airflow. The experimental results show that acoustic resistance of perforated plate is related to plate thickness, aperture diameter, numbers of aperture, acoustic frequency and airflow velocity.
关键词
消声器
穿孔板
声学特性
mufncr, perforated plate, acoustic property.
