[1]张焕好,陈志华,黄振贵,等.同向双涡合并过程声波研究[J].南京理工大学学报(自然科学版),2013,37(06):886-890.
 Zhang Huanhao,Chen Zhihua,Huang Zhengui,et al.Acoustic wave in two corotating vortices pairing[J].Journal of Nanjing University of Science and Technology,2013,37(06):886-890.
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同向双涡合并过程声波研究
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
37卷
期数:
2013年06期
页码:
886-890
栏目:
出版日期:
2013-12-31

文章信息/Info

Title:
Acoustic wave in two corotating vortices pairing
作者:
张焕好陈志华黄振贵姜孝海
南京理工大学 瞬态物理国家重点实验室,江苏 南京 210094
Author(s):
Zhang HuanhaoChen ZhihuaHuang ZhenguiJiang Xiaohai
National Key Laboratory of Transient Physics,NUST,Nanjing 210094,China
关键词:
气动声学 涡合并 声波 大涡模拟 加权本质无振荡混合格式
Keywords:
aeroacoustics vortex pairing acoustic wave large eddy simulation hybrid weight essentially non-oscillatory scheme
分类号:
O354
摘要:
为了对常见不稳定流中声波产生过程的基本物理现象进行研究,基于大涡模拟方法与高阶精度加权本质无振荡混合格式,对剪切流中同向双涡合并过程的动力学流场及其声场进行了数值模拟。结果描述了同向旋转双涡合并过程,揭示了双涡合并产生旋转四极子声源的机理,且与相关研究相符。对剪切层的气动声场进行了数值模拟,揭示了剪切层中双涡旋转合并过程,发现涡合并过程产生的声波在整个剪切层声场中占主导作用,且合并在半个周期内完成。
Abstract:
To investigate the basic physics of acoustic wave generation in common unsteady flows,the dynamics flow and acoustic field produced by the coalescing of two corotating vortices in the shear flow are simulated based on the high order hybrid weight essentially non-oscillatory(WENO)scheme and large-eddy simulation(LES).The results reveal the pairing process of two corotating vortices,and show the generating mechanism of the rotating quadrupole source during vortex pairing.The numerical results agree well with the previous investigations.The acoustic field of a mixing layer is simulated,and the vortex pairing process of the mixing layer is shown.The results show that the acoustic wave generated by the vortex pairing dominates the whole acoustic field of the shear layer,and the pairing process completes during one half cycle.

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相似文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-04-10 修回日期:2012-09-03
基金项目:江苏省高校“青蓝工程”中青年学术带头人培养对象项目; 南京理工大学自主科研专项计划(2011ZDJH30; 2011YBXM182)
作者简介:张焕好(1985-),女,博士生,主要研究方向:超声速流动及其声场,E-mail:zhanghuanhao9@163.com; 通讯作者:陈志华(1967-),男,博士,教授,主要研究方向:计算流体力学,E-mail:chenzh@njust.edu.cn。
引文格式:张焕好,陈志华,黄振贵,等.同向双涡合并过程声波研究[J].南京理工大学学报,2013,37(6):886-890.
投稿网址:http://njlgdxxb.paperonce.org
更新日期/Last Update: 2013-12-31