【作者】 朱之墀； 李嵩； 田瑞；

【Author】 Zhu Zhichi;Li Song;Tian Rui;

【机构】 清华大学工程力学系； 内蒙古工业大学动力系；

【摘要】 降低流动管道噪声在工程上是非常有用的。作者采用Quincke管进行降噪,完成了传声损失的数值计算和实验研究,理论与现场实验结果符合良好,说明本文的理论分析方法是正确的,并且在管道参数尚未优化的现场实验条件下,得到6.4dB(A)的降噪效果,表明这种方法有广泛的工程应用前景。更多还原

【Abstract】 It is very useful to reduce the noise in the flow ducts.The numerical calculation and experimental study for transmission loss have been completed in the paper,in which the noise reduction is obtained by using Quincke tube.The agreement between the theoretical results and in-site experimental data is quite well.It is shown that the method of theoretical analysis presented in the paper is correct.Moreover there is noise reduction of 6.4 dB obtained in the in-site experiment,even though the duct parameters are not under the optimum consideration.That means the method has bright prospects in the engineering application.更多还原