Study on the physics during the final stageof bubble collapse
气泡破裂最后阶段的物理研究
基本信息
- 批准号:21360086
- 负责人:
- 金额:$ 12.4万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2009
- 资助国家:日本
- 起止时间:2009 至 2012
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
An improved ghost fluid method has been developed for understanding nonspherical bubble collapse with nonequilibrium phase transition.We have succeeded in capturing the fine interfacial structure by using adaptive zonal grids in which the grid resolution is changed according to the volume change and translational motion of a bubble. The pressure and temperature discontinuity at the bubble interface has been captured sharply with ghost fluids. The method has been applied to the bubble collapse by shock-bubble interactions and to the collapse of a bubble cloud in a channel, and so on. The bubble collapse and the propagation of pressure waves in gas-liquid two-phase Venturi flows have also been investigated, experimentally. The influence of nonequilibrium phase transition on bubble collapse and the characteristic of pressure waves with bubble oscillations in bubble mixtures have been clarified.
开发了一种改进的幻影流体方法来理解非平衡相变的非球形气泡破裂。我们通过使用自适应分区网格成功地捕获了精细界面结构,其中网格分辨率根据气泡的体积变化和平移运动而改变。气泡界面处的压力和温度不连续性已被幽灵流体清晰地捕捉到。该方法已应用于冲击-气泡相互作用引起的气泡破裂以及通道中气泡云的破裂等。还通过实验研究了气液两相文丘里流中的气泡破裂和压力波的传播。阐明了非平衡相变对气泡破裂的影响以及气泡混合物中气泡振荡的压力波特征。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
浮体下での気泡力学に関する境界要素解析(第2報,球形気泡モデルを用いた近似解法)
浮体下气泡动力学的边界元分析(第二次报告,使用球形气泡模型的近似解)
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:神保佳典
- 通讯作者:神保佳典
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TAKAHIRA Hiroyuki其他文献
Effect of Bubble Size on Cavitation Cloud Formation by the Backscattering of Focused Ultrasound from a Bubble Interface in Gelatin
气泡尺寸对明胶气泡界面聚焦超声反向散射空化云形成的影响
- DOI:
10.3811/jjmf.2022.007 - 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
KISHIMOTO Koshi;NAGANO Syuhei;OGASAWARA Toshiyuki;TAKAHIRA Hiroyuki - 通讯作者:
TAKAHIRA Hiroyuki
Analysis for the Growth and Stability of Bubble Nuclei in High-Intensity Focused Ultrasound Fields
高强度聚焦超声场中气泡核的生长和稳定性分析
- DOI:
10.3811/jjmf.2021.006 - 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
SHINKAI Yuki;ISHIDA Shoma;OGASAWARA Toshiyuki;TAKAHIRA Hiroyuki - 通讯作者:
TAKAHIRA Hiroyuki
Effect of Bubble Size on Cavitation Cloud Formation by the Backscattering of Focused Ultrasound from a Bubble Interface in Gelatin
气泡尺寸对明胶气泡界面聚焦超声反向散射空化云形成的影响
- DOI:
10.3811/jjmf.2022.007 - 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
KISHIMOTO Koshi;NAGANO Syuhei;OGASAWARA Toshiyuki;TAKAHIRA Hiroyuki - 通讯作者:
TAKAHIRA Hiroyuki
Analysis for the Growth and Stability of Bubble Nuclei in High-Intensity Focused Ultrasound Fields
高强度聚焦超声场中气泡核的生长和稳定性分析
- DOI:
10.3811/jjmf.2021.006 - 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
SHINKAI Yuki;ISHIDA Shoma;OGASAWARA Toshiyuki;TAKAHIRA Hiroyuki - 通讯作者:
TAKAHIRA Hiroyuki
Numerical Simulation for Cavitation Inception by Focused Ultrasound Using the Ghost Fluid Method Coupled with Bubble Dynamics
使用幽灵流体法与气泡动力学耦合的聚焦超声对空化起始的数值模拟
- DOI:
10.3811/jjmf.2022.008 - 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
TAMURA Tomoya;NAKAO Mebuki;OGASAWARA Toshiyuki;TAKAHIRA Hiroyuki - 通讯作者:
TAKAHIRA Hiroyuki
TAKAHIRA Hiroyuki的其他文献
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{{ truncateString('TAKAHIRA Hiroyuki', 18)}}的其他基金
Development of a Simulation Technique for Gene/Cancer Therapy Using Nano/Micro Bubbles
使用纳米/微米气泡开发基因/癌症治疗模拟技术
- 批准号:
22656047 - 财政年份:2010
- 资助金额:
$ 12.4万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Investigations of Mechanism for Bubble Collapse and Cleaning in Gas-Liquid Two-Phase Jets
气液两相射流气泡破裂与清洗机理研究
- 批准号:
19560180 - 财政年份:2007
- 资助金额:
$ 12.4万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Nonlinear Dynamics of Microbubbles and Its Influence on a Tissue Surface
微泡的非线性动力学及其对组织表面的影响
- 批准号:
12650177 - 财政年份:2000
- 资助金额:
$ 12.4万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Numerical Study of the Dynamics of Traveling Bubbles around a Body
气泡绕体运动动力学的数值研究
- 批准号:
08650202 - 财政年份:1996
- 资助金额:
$ 12.4万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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Grant-in-Aid for JSPS Fellows
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- 批准号:
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