Hydraulic design of stepped channels based on aerated flow characteristics
| Project/Area Number |
24560628
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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 |
Hydraulic engineering
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 階段状水路 / 空気混入水流 / エネルギー損失 / skimming flow / 比エネルギー / 水理構造物 / Skimming flow / 水深 / 流速 |
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| Outline of Final Research Achievements |
Generally, stepped channel flows are characterized as aerated flows. For the design of stepped channels, it is important to know the aerated flow characteristics such as the aerated flow depth, the air-concentration ratio, the aerated flow velocity, and the energy head in skimming flows. Recently, the project leader clarified the aerated flow characteristics for the quasi-uniform flow region of skimming flows under a wide range of channel slopes. However, for the nonuniform flow region, the aerated flow characteristics were not elucidated. In this study, an equation for the calculation of the aerated flow depth is developed in the nonuniform aerated flow region, and the aerated flow characteristics are determined for the nonuniform aerated flow region under a wide range of hydraulic conditions.
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Report
(4 results)
Research Products
(14 results)
