2013 Fiscal Year Final Research Report
Experimental research on supersonic non-equilibrium condensation on cold wall for liquified-air propulsion
| Project/Area Number |
24656515
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Aerospace engineering
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| Research Institution | Chiba University |
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Principal Investigator |
MAENO Kazuo 千葉大学, 工学(系)研究科(研究院), 教授 (30133606)
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| Co-Investigator(Kenkyū-buntansha) |
OTA Masanori 千葉大学, 大学院工学研究科, 助教 (60436342)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 航空宇宙工学 / 航空宇宙熱流体力学 / 空気液化推進機 / 熱工学 / 高速凝縮 / 極低温 / 凝縮液膜成長 / 無隔膜衝撃波管 |
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| Research Abstract |
As for the supersonic condensation on the cold wall related to the research of liquified air cycle engine (LACE), this study has been tried to clarify experimentally the non-equilibrium supersonic condensation on cryogenic wall by an original diaphragmless shock tube. A new driver section was developed, and together with the first version driver shock tube results, non-equilibrium condensation on cold wall cooled by liquid nitrogen has been investigated. Condensing liquid film thickness was measured by laser interferometric method behind the incident and reflected shock waves in ethanol vapor of room temperature and in R-134a in cold temperature range. Also the heat flux measurement by Pt thin film on glass wall was measured. The both results were compared and discussed. Simultaneously the flow visualization clarified the instability of the surface of condensing liquid film on cold wall. These results indicated the direction of the cryogenic supersonic condensation research on LACE.
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