Abstract
Previous work has demonstrated that installing secondary sources at the edge of a cavity opening can reduce sound radiation through it, but the mechanisms are not clear, which is investigated in this paper by using the modal decomposition method. It is found that a double layer edge system achieves better performance than a single layer system because secondary sources at the edge of the same layer cannot excite some modes effectively and those at different heights compensate this. There exists an upper limit frequency for the systems with boundary installed secondary sources, which is mainly decided by the length of the short side of the opening. More secondary source layers at the edge will increase the upper limit frequency.
| Original language | English |
|---|---|
| Pages (from-to) | 3345-3351 |
| Number of pages | 7 |
| Journal | Journal of the Acoustical Society of America |
| Volume | 143 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Jun 2018 |
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Mechanisms of active control of sound radiation from an opening with boundary installed secondary sources. / Wang, Shuping; Tao, Jiancheng; Qiu, Xiaojun; Pan, Jie.
In: Journal of the Acoustical Society of America, Vol. 143, No. 6, 01.06.2018, p. 3345-3351.Research output: Contribution to journal › Article
TY - JOUR
T1 - Mechanisms of active control of sound radiation from an opening with boundary installed secondary sources
AU - Wang, Shuping
AU - Tao, Jiancheng
AU - Qiu, Xiaojun
AU - Pan, Jie
PY - 2018/6/1
Y1 - 2018/6/1
N2 - Previous work has demonstrated that installing secondary sources at the edge of a cavity opening can reduce sound radiation through it, but the mechanisms are not clear, which is investigated in this paper by using the modal decomposition method. It is found that a double layer edge system achieves better performance than a single layer system because secondary sources at the edge of the same layer cannot excite some modes effectively and those at different heights compensate this. There exists an upper limit frequency for the systems with boundary installed secondary sources, which is mainly decided by the length of the short side of the opening. More secondary source layers at the edge will increase the upper limit frequency.
AB - Previous work has demonstrated that installing secondary sources at the edge of a cavity opening can reduce sound radiation through it, but the mechanisms are not clear, which is investigated in this paper by using the modal decomposition method. It is found that a double layer edge system achieves better performance than a single layer system because secondary sources at the edge of the same layer cannot excite some modes effectively and those at different heights compensate this. There exists an upper limit frequency for the systems with boundary installed secondary sources, which is mainly decided by the length of the short side of the opening. More secondary source layers at the edge will increase the upper limit frequency.
UR - http://www.scopus.com/inward/record.url?scp=85048329076&partnerID=8YFLogxK
U2 - 10.1121/1.5040139
DO - 10.1121/1.5040139
M3 - Article
VL - 143
SP - 3345
EP - 3351
JO - Journal of Acoustical Society of America
JF - Journal of Acoustical Society of America
SN - 0001-4966
IS - 6
ER -