Experimental Study of the Effects of Texture and Soil Layering on the Redistribution Wetting Front from a Point Source
Wetting front (WF) and redistribution wetting front (RWF) depend on different parameters such as soil type, soil layering, land slope, and emitter discharge rate. Experiments were conducted on the physical model applying constant 24 litres of irrigation water, three different slopes (0, 10, and 20%)...
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Shahrood University of Technology
2024-01-01
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| Series: | Journal of Hydraulic and Water Engineering |
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| Online Access: | https://jhwe.shahroodut.ac.ir/article_2883_6d5c7ba0172422ebdb46c2252218948f.pdf |
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| author | Naser Ramzanian Azizi Askari Tashakori Eisa Maroufpoor Hamed Mehdipanah |
| author_facet | Naser Ramzanian Azizi Askari Tashakori Eisa Maroufpoor Hamed Mehdipanah |
| author_sort | Naser Ramzanian Azizi |
| collection | DOAJ |
| description | Wetting front (WF) and redistribution wetting front (RWF) depend on different parameters such as soil type, soil layering, land slope, and emitter discharge rate. Experiments were conducted on the physical model applying constant 24 litres of irrigation water, three different slopes (0, 10, and 20%), and three different discharge rates (2, 4, and 8 L/h). Three homogeneous soils with light, medium, and heavy textures, and two non-homogeneous soils with horizontal layers (LMH: a light texture in the top layer, a medium texture in the middle layer, and a heavy texture in the bottom layer; HML: a heavy texture in the upper layer, a medium texture in the middle layer, and a light texture in the lower layer) were used. The results showed that when the dripper flow rate doubled, in LMH soil, where the light texture was in the top layer, the amount of wetting depth was, on average, 20% higher than HML soil in which the top layer had a heavy texture. In all experiments, the highest increases in the maximum wetting depths of the RWF in five measurement stages within 24 h after irrigation were related to slopes of 0%, 10%, and 20%, respectively. A comparison between homogeneous and non-homogeneous soils showed that the change in soil layering has a significant effect on the radius and depth of wetting. This matter needs to be considered in the design of drip irrigation systems. |
| format | Article |
| id | doaj-art-b9de1e0e97cf471cb94d6b5bd1a0923f |
| institution | Kabale University |
| issn | 2980-986X |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Shahrood University of Technology |
| record_format | Article |
| series | Journal of Hydraulic and Water Engineering |
| spelling | doaj-art-b9de1e0e97cf471cb94d6b5bd1a0923f2024-12-01T04:49:05ZengShahrood University of TechnologyJournal of Hydraulic and Water Engineering2980-986X2024-01-0112273910.22044/jhwe.2023.12794.10032883Experimental Study of the Effects of Texture and Soil Layering on the Redistribution Wetting Front from a Point SourceNaser Ramzanian Azizi0Askari Tashakori1Eisa Maroufpoor2Hamed Mehdipanah3Ph.D. Department of Water Science and Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran.Assistant Professor, Dept. of Water Science and Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran.Professor, Dept. of Water Engineering, University of Kurdistan, Sanandaj, Iran.Ph.D. Department of Water Science and Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr.Wetting front (WF) and redistribution wetting front (RWF) depend on different parameters such as soil type, soil layering, land slope, and emitter discharge rate. Experiments were conducted on the physical model applying constant 24 litres of irrigation water, three different slopes (0, 10, and 20%), and three different discharge rates (2, 4, and 8 L/h). Three homogeneous soils with light, medium, and heavy textures, and two non-homogeneous soils with horizontal layers (LMH: a light texture in the top layer, a medium texture in the middle layer, and a heavy texture in the bottom layer; HML: a heavy texture in the upper layer, a medium texture in the middle layer, and a light texture in the lower layer) were used. The results showed that when the dripper flow rate doubled, in LMH soil, where the light texture was in the top layer, the amount of wetting depth was, on average, 20% higher than HML soil in which the top layer had a heavy texture. In all experiments, the highest increases in the maximum wetting depths of the RWF in five measurement stages within 24 h after irrigation were related to slopes of 0%, 10%, and 20%, respectively. A comparison between homogeneous and non-homogeneous soils showed that the change in soil layering has a significant effect on the radius and depth of wetting. This matter needs to be considered in the design of drip irrigation systems.https://jhwe.shahroodut.ac.ir/article_2883_6d5c7ba0172422ebdb46c2252218948f.pdfemitter dischargelayered soilredistributionporous mediawetting front |
| spellingShingle | Naser Ramzanian Azizi Askari Tashakori Eisa Maroufpoor Hamed Mehdipanah Experimental Study of the Effects of Texture and Soil Layering on the Redistribution Wetting Front from a Point Source Journal of Hydraulic and Water Engineering emitter discharge layered soil redistribution porous media wetting front |
| title | Experimental Study of the Effects of Texture and Soil Layering on the Redistribution Wetting Front from a Point Source |
| title_full | Experimental Study of the Effects of Texture and Soil Layering on the Redistribution Wetting Front from a Point Source |
| title_fullStr | Experimental Study of the Effects of Texture and Soil Layering on the Redistribution Wetting Front from a Point Source |
| title_full_unstemmed | Experimental Study of the Effects of Texture and Soil Layering on the Redistribution Wetting Front from a Point Source |
| title_short | Experimental Study of the Effects of Texture and Soil Layering on the Redistribution Wetting Front from a Point Source |
| title_sort | experimental study of the effects of texture and soil layering on the redistribution wetting front from a point source |
| topic | emitter discharge layered soil redistribution porous media wetting front |
| url | https://jhwe.shahroodut.ac.ir/article_2883_6d5c7ba0172422ebdb46c2252218948f.pdf |
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