| Finite element modeling of acoustic scattering from an encapsulated microbubble near rigid boundary |
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| 作者姓名： | 黄蓓 张艳丽 章东 龚秀芬 |
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| 作者单位： | Institute of Acoustics, Key Laboratory of Modern Acoustics (Nanjing
University), Ministry of Education, Nanjing University, Nanjing
210093, China;Institute of Acoustics, Key Laboratory of Modern Acoustics (Nanjing
University), Ministry of Education, Nanjing University, Nanjing
210093, China;Institute of Acoustics, Key Laboratory of Modern Acoustics (Nanjing
University), Ministry of Education, Nanjing University, Nanjing
210093, China;Institute of Acoustics, Key Laboratory of Modern Acoustics (Nanjing
University), Ministry of Education, Nanjing University, Nanjing
210093, China |
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| 基金项目： | Project supported by the National
Natural Science Foundation of China (Grant No.~10774071), the National Basic Research Prgram
973 (Grant No.~2010CB732600) from Ministry of Science and Technology, China, the
Natural Science Foundation of Jiangsu Province, China (Grant
No.~BK2007518), and the State Key Laboratory of Acoustics (Grant
No.~200902). |
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| 摘 要： | This article proposes a finite element model(FEM) for predicting the acoustic scattering from an encapsulated microbubble near rigid boundary.The validity of the model is first examined by comparing the acoustic nonlinear response of a free microbubble with that obtained by the Church model.Then this model is used to investigate the effect of the rigid boundary on acoustic scattering signals from microbubble.The results indicate that the resonance frequency decreases while the oscillation amplitude increases as the microbubble approaches the rigid boundary.In addition,the fundamental component of the acoustic scattering signal is enhanced compared with that of the free microbubble.
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| 关 键 词： | bound encapsulated microbubble acoustic scattering finite element model |
| 收稿时间： | 2009-07-15 |
Finite element modeling of acoustic scattering from an encapsulated microbubble near rigid boundary |
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| Huang Bei,Zhang Yan-Li,Zhang Dong and Gong Xiu-Fen.Finite element modeling of acoustic scattering from an encapsulated microbubble near rigid boundary[J].Chinese Physics B,2010,19(5):54302-054302. |
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| Authors: | Huang Bei Zhang Yan-Li Zhang Dong and Gong Xiu-Fen |
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| Institution: | Institute of Acoustics, Key Laboratory of Modern Acoustics (Nanjing
University), Ministry of Education, Nanjing University, Nanjing
210093, China |
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| Abstract: | This article proposes a finite element model (FEM) for
predicting the acoustic scattering from an encapsulated microbubble
near rigid boundary. The validity of the model is first examined by
comparing the acoustic nonlinear response of a free microbubble with
that obtained by the Church model. Then this model is used to
investigate the effect of the rigid boundary on acoustic scattering
signals from microbubble. The results indicate that the resonance
frequency decreases while the oscillation amplitude increases as the
microbubble approaches the rigid boundary. In addition, the
fundamental component of the acoustic scattering signal is enhanced
compared with that of the free microbubble. |
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| Keywords: | bound encapsulated microbubble acoustic scattering finite element model |
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