Journal of Changshu Institute of Technology2024，Vol.38Issue(2)：19-24,6.
非定常流动对声传播的影响研究
Study on the Effects of Unsteady Flow on Sound Propagation
摘要
Abstract
The influence of unsteady flow on sound propagation is investigated by using a general nonlinear wave propagation equation, which can be regarded as an extended form of the Westervelt equation. The study is conducted under the prior conditions of low flow Mach number and small fluctuations in the sound field. In order to analyze the impact of unsteady flow on the time-frequency sound field, the paper employs the time-domain finite-difference method (FDTD) to perform simulation calculations on a two-dimensional parameter array model. The research results indicate that the magnitude and direction of the flow velocity can affect the nonlinear effects of wave propagation to a certain extent, leading to shifts in the amplitude and direction of the beat frequency signals generated under nonlinear conditions.关键词
非定常流动/抛物方程/非线性声效应Key words
unsteady flow/parabolic equation/nonlinear effects分类
数理科学引用本文复制引用
陈广智,解龙翔,张玲玲..非定常流动对声传播的影响研究[J].Journal of Changshu Institute of Technology,2024,38(2):19-24,6.基金项目
国家自然科学基金重大研究计划重点支持项目"功能基元序构声学材料的耦合增强效应与逆向设计研究"(92263207) （92263207）
