2012 Fiscal Year Final Research Report
Research on air-liquid mixed flow in soil
| Project/Area Number |
22560493
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Shinshu University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 地盤環境工学 / 気液混相流 / カラム実験 / 水分特性曲線 / 乾湿履歴 |
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| Research Abstract |
Phenomena related to simultaneous flow of soil water and air were experimentally investigated by using soil columns．New sensors for measuring soil water suction and soil air pressure were originally developed. The soil column equipped with these sensors was filled with 5 different soil samples and water was infiltrated under the influence of soil water hysteresis while measuring soil water suction and soil air pressure. It was reviled that the flow of soil air is so quick that all the sensors located at different depths showed almost the same value whilst the response of water flow is slow and that the soil water hysteresis plays important role on soil water and air movement. These findings were finally incorporated into mathematical models dealing with coupled water-mass and water-heat transport in soils.
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