Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR018833 |
The dynamic response of the water retention curve in unsaturated soils during drainage to acoustic excitations | |
Lo, Wei-Cheng1; Yang, Chi-Chin1; Hsu, Shao-Yiu3; Chen, Chu-Hui2; Yeh, Chao-Lung4; Hilpert, Markus5 | |
2017 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | Taiwan; USA |
英文摘要 | We examined the effects of acoustic excitations on the water retention curve, i.e., the relationship between capillary pressure (PC) and water saturation (SW) in unsaturated porous media, during drainage. The water retention curves were measured under static and dynamic conditions, where water was withdrawn from a sandbox with three different pumping rates, 12.6, 19.7, and 25.2 mL/s. Excitations with frequencies of 75, 100, 125, and 150 Hz were applied. The acoustic excitations had no effect on the static water retention curve but altered the dynamic water retention curve. The acoustic excitations lowered the dynamic PC, especially under the dynamic condition where the pumping rate was 25.2 mL/s and when SW varied between 0.6 and 0.95. The differences between the capillary pressures measured under static and dynamic conditions decreased when acoustic excitations were applied. We link this finding to the change in contact angle induced by the acoustic excitation. The dynamic coefficients, , for the dynamic water retention curves that we fitted to the experimental data were smaller with than without acoustic excitations. We attribute the decrease of the dynamic coefficient to the combination of the increase in the permeability and the decline in the air-entry pressure caused by adding acoustic excitations. |
英文关键词 | dynamic water retention curve dynamic coefficient contact angle air-entry pressure |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394911200042 |
WOS关键词 | CAPILLARITY-INDUCED RESONANCE ; SATURATED POROUS-MEDIA ; PHYSICAL-PROPERTIES ; BLOB MOBILIZATION ; IMMISCIBLE FLUIDS ; WAVE PROPAGATION ; MOISTURE-CONTENT ; SEISMIC-WAVES ; 2-PHASE FLOW ; PRESSURE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21226 |
专题 | 资源环境科学 |
作者单位 | 1.Natl Cheng Kung Univ, Dept Hydraul & Ocean Engn, Tainan, Taiwan; 2.China Univ Technol, Coll Planning & Design, Taipei, Taiwan; 3.Natl Taiwan Univ, Dept Bioenvironm Syst Engn, Taipei, Taiwan; 4.Natl Cheng Kung Univ, Tainan Hydraul Lab, Tainan, Taiwan; 5.Columbia Univ, Mailman Sch Publ Hlth, Environm Hlth Sci, New York, NY USA |
推荐引用方式 GB/T 7714 | Lo, Wei-Cheng,Yang, Chi-Chin,Hsu, Shao-Yiu,et al. The dynamic response of the water retention curve in unsaturated soils during drainage to acoustic excitations[J]. WATER RESOURCES RESEARCH,2017,53(1). |
APA | Lo, Wei-Cheng,Yang, Chi-Chin,Hsu, Shao-Yiu,Chen, Chu-Hui,Yeh, Chao-Lung,&Hilpert, Markus.(2017).The dynamic response of the water retention curve in unsaturated soils during drainage to acoustic excitations.WATER RESOURCES RESEARCH,53(1). |
MLA | Lo, Wei-Cheng,et al."The dynamic response of the water retention curve in unsaturated soils during drainage to acoustic excitations".WATER RESOURCES RESEARCH 53.1(2017). |
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