Acoustic emission of a vortex ring near a porous edge. Part 1: theory
Acoustic emission of a vortex ring near a porous edge. Part 1: theory
复制标题
多孔边缘附近涡环的声发射。
DOI:
10.1017/jfm.2022.313
复制
发表时间:
2022
影响因子:
3.7
通讯作者:
Krane, Michael H.
中科院分区:
文献类型:
--
作者:
Chen, Huansheng;Yoas, Zachary W.;Jaworski, Justin W.;Krane, Michael H.
The sound of a vortex ring passing near a semi-infinite porous edge is investigated analytically. A Green's function approach solves the associated vortex sound problem and determines the time-dependent pressure signal and its directivity in the acoustic far field as a function of a single dimensionless porosity parameter. At large values of this parameter, the radiated acoustic power scales on the vortex ring speed scaling recovered in the impermeable edge limit. Results for the vortex ring configuration in a quiescent fluid furnish an analogue to scaling results from standard turbulence noise generation analyses, and permit a direct comparison to experiments described in Part 2 that circumvent contamination of the weak sound from porous edges by background noise sources that exist as a result of a mean flow.
登录
查看更多内容
DOI:
--
发表时间:
1981
期刊:
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
影响因子:
--
作者:
I. Abrahams
通讯作者:
I. Abrahams
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
F. G. Leppington
通讯作者:
F. G. Leppington
影响因子:
4.7
作者:
Colbrook, Matthew J.;Ayton, Lorna J.
通讯作者:
Ayton, Lorna J.
DOI:
--
发表时间:
1975
期刊:
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences
影响因子:
--
作者:
P. Cannell
通讯作者:
P. Cannell
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
M. S. Howe
通讯作者:
M. S. Howe