Effect of the wetting hydraulic property of soil on 1-D water infiltration

Rainwater infiltration is primarily governed by the soil-water characteristic curve (SWCC) and hydraulic conductivity function (HCF) of soil. Both the SWCC and the HCF are hysteretic during the drying and wetting processes. In a numerical simulation, different seepage results can be obtained by inco...

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Main Authors: Li, Xuebo, Shen, Tianlun, Xiang, Ke, Zhai, Qian, Rahardjo, Harianto, Satyanaga, Alfrendo, Wang, Shijun
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/169394
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1693942023-07-21T15:33:29Z Effect of the wetting hydraulic property of soil on 1-D water infiltration Li, Xuebo Shen, Tianlun Xiang, Ke Zhai, Qian Rahardjo, Harianto Satyanaga, Alfrendo Wang, Shijun School of Civil and Environmental Engineering Engineering::Civil engineering Simulation of Rainwater Infiltration Infiltration to Soil Column Rainwater infiltration is primarily governed by the soil-water characteristic curve (SWCC) and hydraulic conductivity function (HCF) of soil. Both the SWCC and the HCF are hysteretic during the drying and wetting processes. In a numerical simulation, different seepage results can be obtained by incorporating different hydraulic conductivity functions of soil. In practice, the wetting HCF is commonly estimated from the wetting SWCC using the statistical method, which is named HCFswcc,w in this note. However, there is no study that has verified the results from seepage analyses using HCFswcc,w. Therefore, the objective of this study is to investigate the influence of wetting SWCC and wetting HCF on 1-D water infiltration. The results from the numerical simulations were verified with the instrumentation reading from a soil column. It was observed that the results from the model using wetting HCFPSDF, which defines the wetting HCF estimated using the concept of pore-size distribution function, gave better agreement with the instrumented data. Therefore, both wetting SWCC and wetting HCFPSDF are advised to be used as input information for the numerical simulation of rainwater infiltration. Published version 2023-07-17T08:17:50Z 2023-07-17T08:17:50Z 2023 Journal Article Li, X., Shen, T., Xiang, K., Zhai, Q., Rahardjo, H., Satyanaga, A. & Wang, S. (2023). Effect of the wetting hydraulic property of soil on 1-D water infiltration. Sustainability, 15(3), 1822-. https://dx.doi.org/10.3390/su15031822 2071-1050 https://hdl.handle.net/10356/169394 10.3390/su15031822 2-s2.0-85147984342 3 15 1822 en Sustainability © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering
Simulation of Rainwater Infiltration
Infiltration to Soil Column
spellingShingle Engineering::Civil engineering
Simulation of Rainwater Infiltration
Infiltration to Soil Column
Li, Xuebo
Shen, Tianlun
Xiang, Ke
Zhai, Qian
Rahardjo, Harianto
Satyanaga, Alfrendo
Wang, Shijun
Effect of the wetting hydraulic property of soil on 1-D water infiltration
description Rainwater infiltration is primarily governed by the soil-water characteristic curve (SWCC) and hydraulic conductivity function (HCF) of soil. Both the SWCC and the HCF are hysteretic during the drying and wetting processes. In a numerical simulation, different seepage results can be obtained by incorporating different hydraulic conductivity functions of soil. In practice, the wetting HCF is commonly estimated from the wetting SWCC using the statistical method, which is named HCFswcc,w in this note. However, there is no study that has verified the results from seepage analyses using HCFswcc,w. Therefore, the objective of this study is to investigate the influence of wetting SWCC and wetting HCF on 1-D water infiltration. The results from the numerical simulations were verified with the instrumentation reading from a soil column. It was observed that the results from the model using wetting HCFPSDF, which defines the wetting HCF estimated using the concept of pore-size distribution function, gave better agreement with the instrumented data. Therefore, both wetting SWCC and wetting HCFPSDF are advised to be used as input information for the numerical simulation of rainwater infiltration.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Li, Xuebo
Shen, Tianlun
Xiang, Ke
Zhai, Qian
Rahardjo, Harianto
Satyanaga, Alfrendo
Wang, Shijun
format Article
author Li, Xuebo
Shen, Tianlun
Xiang, Ke
Zhai, Qian
Rahardjo, Harianto
Satyanaga, Alfrendo
Wang, Shijun
author_sort Li, Xuebo
title Effect of the wetting hydraulic property of soil on 1-D water infiltration
title_short Effect of the wetting hydraulic property of soil on 1-D water infiltration
title_full Effect of the wetting hydraulic property of soil on 1-D water infiltration
title_fullStr Effect of the wetting hydraulic property of soil on 1-D water infiltration
title_full_unstemmed Effect of the wetting hydraulic property of soil on 1-D water infiltration
title_sort effect of the wetting hydraulic property of soil on 1-d water infiltration
publishDate 2023
url https://hdl.handle.net/10356/169394
_version_ 1773551407237955584