| 二维涡斑的运动发声 |
| |
| 引用本文： | 刘晓宙,刘应中,缪国平,唐春权.二维涡斑的运动发声[J].声学技术,2001,20(1):10-12. |
| |
| 作者姓名： | 刘晓宙 刘应中 缪国平 唐春权 |
| |
| 作者单位： | 上海交通大学船舶与海洋工程学院, |
| |
| 基金项目： | 国防水动力学基金资助项目(14.2.3.2) |
| |
| 摘 要： | 本文通过对Navier-Stokes方程的直接数值模拟，并应用涡斑模型，研究了腔内二维涡斑运动发声问题，结果表明旋转方向相同的涡斑，不管 始涡斑的涡量分布如何，最后的涡量分布为Burgers型涡斑，呈现“单胞”的稳定结构；旋转方向相反的涡斑，其运动演化转变与初始条件有关，最终呈“双胞”的稳定结构。
|
| 关 键 词： | 涡斑 稳定结构 融合 运动发声 涡量分布 声辐射 声学特性 |
| 文章编号： | 1000-3630(2001)01-0010-03 |
| 收稿时间： | 2000/1/22 0:00:00 |
| 修稿时间： | 2000年1月22日 |
Sound generation from the motion of two-dimensional vortex patches |
| |
| LIU Xiao-zhou,LIU Ying-zhong,MIAO Guo-ping and TANG Chun-quan.Sound generation from the motion of two-dimensional vortex patches[J].Technical Acoustics,2001,20(1):10-12. |
| |
| Authors: | LIU Xiao-zhou LIU Ying-zhong MIAO Guo-ping and TANG Chun-quan |
| |
| Affiliation: | School of Naval Architecture and Ocean Engineering, Shanghai Jiaotong Univ ersity, Shanghai 200030, China;School of Naval Architecture and Ocean Engineering, Shanghai Jiaotong Univ ersity, Shanghai 200030, China;School of Naval Architecture and Ocean Engineering, Shanghai Jiaotong Univ ersity, Shanghai 200030, China;School of Naval Architecture and Ocean Engineering, Shanghai Jiaotong Univ ersity, Shanghai 200030, China |
| |
| Abstract: | Using the model of vortex patch,sound generation from the motion of two dimensional vortex patches in square is studied through Navier Stokes equations.The results show that no matter how the initial distribution of vorticity with same revolving direction is,the final vorticity distribution is that of Burgers vortex with single cell,having stable structure.However,the vortex patches with opposite revolving direction have the stable structure with two cells amd their evolution is dependent on the initial condition. |
| |
| Keywords: | vortex patches stable strcture merge |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《声学技术》浏览原始摘要信息 |
|
点击此处可从《声学技术》下载全文 |
|
