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声场中气泡运动的混沌特性
引用本文:沈壮志,林书玉.声场中气泡运动的混沌特性[J].物理学报,2011,60(10):104302-104302.
作者姓名:沈壮志  林书玉
作者单位:陕西师范大学应用声学研究所,陕西省超声学重点实验室,西安 710062
基金项目:国家自然科学基金(批准号: 10974127)、陕西省自然科学基金(批准号:2011JM1002)和中央高校基本科研基金(批准号: GK200901019)资助的课题.
摘    要:以水为工作介质,考虑了液体的可压缩性,研究了声场中气泡的运动特性,模拟了声波频率、声压幅值、气泡初始半径以及液体的表面张力和黏滞系数的变化对气泡运动状态的影响. 分析了空化处理效果与气泡运动状态之间关系. 结果表明:气泡运动处于混沌状态,是提高声空化降解有机污染物能力的最重要因素. 关键词: 声空化 混沌 相图 功率谱图

关 键 词:声空化  混沌  相图  功率谱图
收稿时间:2011-03-19

Chaotic characteristics of gas bubble motion in acoustic field
Shen Zhuang-Zhi and Lin Shu-Yu.Chaotic characteristics of gas bubble motion in acoustic field[J].Acta Physica Sinica,2011,60(10):104302-104302.
Authors:Shen Zhuang-Zhi and Lin Shu-Yu
Institution:Institute of Appiled Acoustics, Key Laboratory of Ultrasonics of Shaanxi Province, Shaanxi Normal University, Xi'an 710062, China;Institute of Appiled Acoustics, Key Laboratory of Ultrasonics of Shaanxi Province, Shaanxi Normal University, Xi'an 710062, China
Abstract:Considering liquid compressibility, the dynamical behaviors of gas bubble in acoustic field are investigated by regarding water as a work medium. The effects of acoustic frequency, acoustic pressure, initial radius of gas bubble, liquid surface tension, and viscosity coefficient on bubble motion state are numerically simulated. The relationship between cavitation treatment effect and gas bubble motion state is analysed.The results show that when the gas bubble motion is in a chaotic state, it is the most important factor for enhancing acoustic cavitation degradation of organic pollutants ability.
Keywords:acoustic cavitation  chaos  phase diagram  power spectrum
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