摘要
论文采用FW-H声模拟法,对入口气压分别为3.12、4.12、5.12、6.12、7.12和8.12 atm的哈特曼发声器阵列的声场声学性能进行了数值计算。对声场声强进行了非线性回归分析,得出了声场的声强经验公式。并对回归进行方差分析和F分布检验,分析结果显示,置信水平可以达到10-4,回归水平显著,经验公式的可信度很高。论文结论对哈特曼发声器阵列的应用具有重要的指导意义。
Based on the method FW-H acoustic model, the acoustic characteristics of the Hartmann acoustic generator array are numerically calculated for different inlet pressures of 3.12, 4.12, 5.12, 6.12, 7.12 and 8.12 atm. The empirical equation of downstream acoustic intensity is introduced by nonlinear fitting of the calculated intensity results for different inlet pressures. The significance test is taken with F function, and the results show that the confidence level is at 10^-4, and the regression level is high. The believability of the empirical equation of acoustic intensity is high. The results of the paper are significant for the practical application of the Hartmann acoustic generator array.
出处
《声学技术》
CSCD
北大核心
2015年第6期484-488,共5页
Technical Acoustics
基金
国家863计划课题项目(2005AA000200)
