Visual Observation and Numerical Simulations of Transient Process on Limiting Liquid-Solid Contact on Superheated Surface during Impinging Jet Cooling
| Project/Area Number |
23560222
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Thermal engineering
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| Research Institution | University of Fukui |
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Principal Investigator |
NAGAI Niro 福井大学, 工学(系)研究科(研究院), 教授 (70251981)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 濡れ開始 / 沸騰 / 固液接触 / MHF点 / 可視化 / 衝突噴流 / 核生成 |
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| Research Abstract |
During impinging jet cooling of high temperature surface, film boiling collapsed by initiating localized liquid-solid contacts on superheated surface. This criteria, i.e. wetting initiation condition, is very important related to steel manufacturing process and etc. This research tried to reveal this wetting initiation conditions by visual observation and numerical simulation of localized liquid-solid contact situations on superheated surface. As a result, in case of single crystal sapphire surface which has relatively high thermal diffusivity, the wetting initiaion condition was almost decided by "a certain surface temperature". However, in case of quartz glass which has relatively low thermal diffusivity, the condition was not decided only by the surface temperature, and further research will be necessary.
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Report
(4 results)
Research Products
(9 results)
