中国物理B ›› 2016, Vol. 25 ›› Issue (2): 24304-024304.doi: 10.1088/1674-1056/25/2/024304
所属专题： Virtual Special Topic — Acoustics
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
Bubble nonlinear dynamics and stimulated scattering process
Jie Shi(时洁), De-Sen Yang(杨德森), Sheng-Guo Shi(时胜国), Bo Hu(胡博), Hao-Yang Zhang(张昊阳), Shi-Yong Hu(胡诗涌)
- 1. College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China;
2. Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China
Bubble nonlinear dynamics and stimulated scattering process
Jie Shi(时洁)1,2, De-Sen Yang(杨德森)1,2, Sheng-Guo Shi(时胜国)1,2, Bo Hu(胡博)1,2, Hao-Yang Zhang(张昊阳)1,2, Shi-Yong Hu(胡诗涌)1
- 1. College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China;
2. Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China
摘要：
A complete understanding of the bubble dynamics is deemed necessary in order to achieve their full potential applications in industry and medicine. For this purpose it is first needed to expand our knowledge of a single bubble behavior under different possible conditions including the frequency and pressure variations of the sound field. In addition, stimulated scattering of sound on a bubble is a special effect in sound field, and its characteristics are associated with bubble oscillation mode. A bubble in liquid can be considered as a representative example of nonlinear dynamical system theory with its resonance, and its dynamics characteristics can be described by the Keller-Miksis equation. The nonlinear dynamics of an acoustically excited gas bubble in water is investigated by using theoretical and numerical analysis methods. Our results show its strongly nonlinear behavior with respect to the pressure amplitude and excitation frequency as the control parameters, and give an intuitive insight into stimulated sound scattering on a bubble. It is seen that the stimulated sound scattering is different from common dynamical behaviors, such as bifurcation and chaos, which is the result of the nonlinear resonance of a bubble under the excitation of a high amplitude acoustic sound wave essentially. The numerical analysis results show that the threshold of stimulated sound scattering is smaller than those of bifurcation and chaos in the common condition.
中图分类号: (Solitons, chaos)
- 43.25.Rq