Mode interactions of a high-subsonic deep cavity
Mode interactions of a high-subsonic deep cavity
复制标题
高亚音速深腔模态相互作用
DOI:
10.1063/1.4983368
复制
发表时间:
2017-05
影响因子:
4.6
通讯作者:
Adams Nikolaus A.
中科院分区:
文献类型:
--
作者:
Chen Zhenli;Adams Nikolaus A.
To understand the interactions of the acoustic modes associated with the tunnel walls and the cavity oscillations in the experiment, flows over a deep cavity having a length-to-depth ratio L/D = 0.42 at high subsonic speeds with and without an upper tunnel wall were investigated by using an implicit large-eddy simulation with an adaptive local deconvolution method. The results of the simulations with the upper tunnel wall converge well to the experimental results as the resolution increases. However, in the simulations without the upper tunnel wall the flow converges to a different mean state. The mode interactions were analyzed by using a Dynamic Mode Decomposition (DMD) method based on a memory-efficient snapshot algorithm. It was found that nearly trapped global modes, which have almost zero upstream and downstream radiation, can occur. The interactions of the trapped modes, the acoustic resonant modes in the cavity, and the shear-layer modes can be observed in the DMD modes of the flow with the upper ...
登录
查看更多内容
DOI:
10.1007/978-3-319-14448-1_41
发表时间:
2015
期刊:
--
影响因子:
--
作者:
Zhenli Chen;B. Zhang;S. Hickel;N. Adams
通讯作者:
Zhenli Chen;B. Zhang;S. Hickel;N. Adams
影响因子:
4.6
作者:
J. Lumley;A. Poje
通讯作者:
J. Lumley;A. Poje
DOI:
10.7907/1crr-9y28
发表时间:
1956
期刊:
--
影响因子:
--
作者:
K. Karamcheti
通讯作者:
K. Karamcheti
影响因子:
3.7
作者:
M. Grilli;P. Schmid;S. Hickel;N. Adams
通讯作者:
M. Grilli;P. Schmid;S. Hickel;N. Adams
影响因子:
27.7
作者:
C. Rowley;David R. Williams
通讯作者:
C. Rowley;David R. Williams