| 项目编号: | 1511152
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| 项目名称: | UNS: Collaborative Research: Numerical and Experimental Study of the Instability Mechanisms and Bubble Growth due to Explosive Boiling |
| 作者: | James Hermanson
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| 承担单位: | University of Washington
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| 批准年: | 2014
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| 开始日期: | 2015-09-15
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| 结束日期: | 2018-08-31
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| 资助金额: | USD130011
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Engineering - Chemical, Bioengineering, Environmental, and Transport Systems
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| 英文关键词: | micro-scale
; bubble
; multi-nuclei growth
; current research
; initial growth
; bubble growth dynamics
; dynamic growth
; energy
; explosive vapor bubble growth
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| 英文摘要: | 1512093 / 1511152
Esmaeeli, Asghar / Hermanson, James C.
The proposal aims to provide much needed insight of the very rapid, explosive vapor bubble growth much like those in boiling water but even faster. This can occur by properly providing and focusing energy on liquids. One potential application of this knowledge is that, since the bubble comes into existence and grows fast while at micro-scales, it can help design micro-scale actuators commonly used in small devices. Both undergraduate and graduate will be involved in, while K-12 students and their teachers will also be exposed to, the research.
The PIs propose a combined experimental and modeling approach to (1) determine the range of parameters over which explosive boiling in quiescent flows will occur and, under this condition, (2) to gain fundamental understanding of the dynamic growth of a single vapor nucleus, and (3) to explore the dynamics of multi-nuclei growth. Current research in the field is almost exclusively experimental in nature, and many crucial aspects cannot be probed quantitatively due to the complexity of experimentation. The numerical modeling will facilitate interpreting experimental results, which will be acquired using high-speed imaging, yielding much-needed quantitative insights and helping to solve problems over a broader range of engineering problems involving rapid evaporation. If the bubble growth dynamics is captured, it can be used as an actuator by properly focusing energy onto its initial growth that occurs at micro-scales. The results can improve understanding of energy focusing phenomena at the micro-scale involving bubbles as actuators if successful. Similarly, it will help to improve the design of flash-boiling atomizers and the processes involving transport and storage of volatile liquids or large scale energy generation. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/93266
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
James Hermanson. UNS: Collaborative Research: Numerical and Experimental Study of the Instability Mechanisms and Bubble Growth due to Explosive Boiling. 2014-01-01.
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