Noise reduction in cavity flow by addition of porous media
Noise reduction in cavity flow by addition of porous media
复制标题
通过添加多孔介质降低腔内流动的噪音
DOI:
10.1007/s10409-021-09043-c
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发表时间:
2022-01
影响因子:
3.5
通讯作者:
Cui Shuai
中科院分区:
文献类型:
--
作者:
Guo Ruqian;Chen Xiaopeng;Wan Zhenhua;Hu Haibao;Cui Shuai
Self-sustained oscillation and the sound radiation of flow over an open cavity is of great importance in nature and industry.Influences of filled porous media in the cavity are investigated numerically by using a lattice Boltzmann method in two-dimensional space.It is shown that the outcomes of the porous patch depend on the location of the patch and the original flow mode,namely shear layer (SL) and wake mode (WM).For SL flow,the porous patch either damps the vortical flow or suppresses the generation of the secondary vortex sheet on the wall.The later effect destabilizes the SL.Consequently,the radiated sound is reduced as the patch is on the trailing edge,and increased with porous patch on the floor,respectively.For flow in WM,a transition from WM to SL mode is found when the porous patch is set either on the floor or behind the leading wall.In the cases,the recirculating flow on large scale is blocked significantly due to the porous patch,therefore,the WM flow is not sustained.On the other hand,the porous patch on the trailing edge slightly weakens the sound due to dissipation.The study shows that assembling of porous media in the flow field decreases the radiated sound level only if it is done carefully.
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影响因子:
2.9
作者:
Ru-Qian Guo;Xiao-Peng Chen
通讯作者:
Xiao-Peng Chen
DOI:
10.1098/rspa.1955.0191
发表时间:
1955-01-01
影响因子:
--
作者:
CURLE, N
通讯作者:
CURLE, N
影响因子:
27.7
作者:
C. Rowley;David R. Williams
通讯作者:
C. Rowley;David R. Williams
影响因子:
1.9
作者:
Young-ki Lee;Min-Sung Kang;H. Kim;T. Setoguchi
通讯作者:
Young-ki Lee;Min-Sung Kang;H. Kim;T. Setoguchi
影响因子:
4.7
作者:
Hanru Liu;Jinjia Wei;Z. Qu
通讯作者:
Hanru Liu;Jinjia Wei;Z. Qu