Salt Distribution in a Soil Irrigated by Subsurface Emitter
The best design of subsurface trickle irrigation systems requires knowledge of water and salt distribution patterns around the emitters that match the root extraction and minimize water losses. The transient distribution of water and salt in a two-dimensional homogeneous Iraqi soil domain under subs...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Baghdad
2020-08-01
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| Series: | Journal of Engineering |
| Subjects: | |
| Online Access: | http://joe.uobaghdad.edu.iq/index.php/main/article/view/1163 |
| _version_ | 1797701757866868736 |
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| author | Ali Raheem Waseen Maysoon Basheer Abid |
| author_facet | Ali Raheem Waseen Maysoon Basheer Abid |
| author_sort | Ali Raheem Waseen |
| collection | DOAJ |
| description | The best design of subsurface trickle irrigation systems requires knowledge of water and salt distribution patterns around the emitters that match the root extraction and minimize water losses. The transient distribution of water and salt in a two-dimensional homogeneous Iraqi soil domain under subsurface trickle irrigation with different settings of an emitter is investigated numerically using 2D-HYDRUS software. Three types of Iraqi soil were selected. The effect of altering different values of water application rate and initial soil water content was investigated in the developed model. The coefficient of correlation (R2) and the root-mean-square error (RMSE) was used to validate the predicted numerical result. This statistical analysis revealed that there was no much difference between the predicted numerical results, and the measured values. R2 varied from 0.75 to 0.93 and the (RMSE) from 0.079 to 0.116. The comparison confirms the accuracy of the developed model, and it shows that it can be used to simulate the front wetting patterns of water and salt distribution under subsurface trickle irrigation systems. The simulation outcome showed that as the distance from the emitter increased, soil salinity far from the emitter decreased. As expected, irrigation duration and amount affects the dimension of the solute distribution. |
| first_indexed | 2024-03-12T04:41:20Z |
| format | Article |
| id | doaj.art-b719744bc9cc4980a688b650060fde63 |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-03-12T04:41:20Z |
| publishDate | 2020-08-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-b719744bc9cc4980a688b650060fde632023-09-03T09:42:20ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392020-08-0126810.31026/j.eng.2020.08.06Salt Distribution in a Soil Irrigated by Subsurface EmitterAli Raheem Waseen0Maysoon Basheer Abid1College of Engineering - University of BaghdadCollege of Engineering - University of BaghdadThe best design of subsurface trickle irrigation systems requires knowledge of water and salt distribution patterns around the emitters that match the root extraction and minimize water losses. The transient distribution of water and salt in a two-dimensional homogeneous Iraqi soil domain under subsurface trickle irrigation with different settings of an emitter is investigated numerically using 2D-HYDRUS software. Three types of Iraqi soil were selected. The effect of altering different values of water application rate and initial soil water content was investigated in the developed model. The coefficient of correlation (R2) and the root-mean-square error (RMSE) was used to validate the predicted numerical result. This statistical analysis revealed that there was no much difference between the predicted numerical results, and the measured values. R2 varied from 0.75 to 0.93 and the (RMSE) from 0.079 to 0.116. The comparison confirms the accuracy of the developed model, and it shows that it can be used to simulate the front wetting patterns of water and salt distribution under subsurface trickle irrigation systems. The simulation outcome showed that as the distance from the emitter increased, soil salinity far from the emitter decreased. As expected, irrigation duration and amount affects the dimension of the solute distribution.http://joe.uobaghdad.edu.iq/index.php/main/article/view/1163Hydrus 2D, subsurface emitter, salt distribution, soil moisture content |
| spellingShingle | Ali Raheem Waseen Maysoon Basheer Abid Salt Distribution in a Soil Irrigated by Subsurface Emitter Journal of Engineering Hydrus 2D, subsurface emitter, salt distribution, soil moisture content |
| title | Salt Distribution in a Soil Irrigated by Subsurface Emitter |
| title_full | Salt Distribution in a Soil Irrigated by Subsurface Emitter |
| title_fullStr | Salt Distribution in a Soil Irrigated by Subsurface Emitter |
| title_full_unstemmed | Salt Distribution in a Soil Irrigated by Subsurface Emitter |
| title_short | Salt Distribution in a Soil Irrigated by Subsurface Emitter |
| title_sort | salt distribution in a soil irrigated by subsurface emitter |
| topic | Hydrus 2D, subsurface emitter, salt distribution, soil moisture content |
| url | http://joe.uobaghdad.edu.iq/index.php/main/article/view/1163 |
| work_keys_str_mv | AT aliraheemwaseen saltdistributioninasoilirrigatedbysubsurfaceemitter AT maysoonbasheerabid saltdistributioninasoilirrigatedbysubsurfaceemitter |