| Project/Area Number |
07555066
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 試験 |
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| Research Field |
Fluid engineering
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| Research Institution | Kagoshima National College of Technology |
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Principal Investigator |
ESAKI Shuji Kagoshima Nat. Col. Tech., Mech. Eng. Professor., 機械工学科, 教授 (40185111)
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| Co-Investigator(Kenkyū-buntansha) |
FURUKAWA Masahiro SANYO Electric Co. Ltd. Researcher, 吸収式技術部, 課長
SHII Yasuyuki Kagoshima Nat. Col. Tech., Mech. Eng. Professor., 機械工学科, 助手 (30270391)
NAKASHIMA Masahiro Kogoshima Nat. Col. Tech., Mech. Eng. Professor., 機械工学科, 教授 (70124170)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1996: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Nozzle / Multi-phase Flow / Bubble / Gas Entrainment / jet |
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| Research Abstract |
An experimental study was made to clarify the fundamental characteristics of the gas entrained by water jet which flows into liquid surface in a pipe. Experimental parameters considered were the velocity of water jet, the diameter of nozzle, the height of nozzle from the liquid surface in a test pipe and the diameter of test pipe. Experiments were carried out in air-water system under condition of atmospheric pressure. As the result, the gas entrainment increases with increasing both the velocity of water jet and the height of nozzle. However, the gas entrainment decreases when the location of nozzle from the liquid surface is too high. Bacause, the part of water jet becomes easy to touch the inner wall of test pipe and the flow rate of water which flows along the inner wall of test pipe increases. Also, the use of nozzle with many small holes rather than single large hole would be useful to increase the gas entrainment if the total flow rate of jet is same.
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