Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.5004/dwt.2023.28229 |
Experimental and numerical modelling of constructed channels in the desert sand dunes for MAR applications | |
Al-Shukaili, A.; Kacimov, A. R. | |
通讯作者 | Al-Shukaili, A |
来源期刊 | DESALINATION AND WATER TREATMENT
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ISSN | 1944-3994 |
EISSN | 1944-3986 |
出版年 | 2023 |
卷号 | 285页码:78-82 |
英文摘要 | Hydrology of sand dunes in the deserts of arid regions, specifically, groundwater in aquifers underlying the sand fields (e.g., Wahiba Sands in Oman) has been studied since 1970th. Sustainable water resources management in the desert dunes is essential, particularly in Gulf countries, where no perennial streams exist. Interdunal areas can be explored and tested for managed aquifer recharge ( MAR) if natural wadis or small- size constructed channels are used as surface water spreading systems. These channels would both transport and seep tertiary treated wastewater into the vadose zone and enhance the amount of moisture content there. In this paper, a coupled surface-subsurface flow was experimentally and numerically studied in application to MAR through small-size triangular channels. In the field, experiments were done at the crest and slope of a selected dune, a triangular channel had a sand bed and a mild slope (S = 5 degrees). By applying a constant discharge at the inlet of the channel, the length, L, of the water jets propagating until their complete seepage extinction has been measured. Numerically, by HYDRUS2D, we simulated saturated-unsaturated transient infiltration by considering a cross-section of triangular channels of different bank slopes. to find the maximum total volume of infiltrated water from the channel. The boundary condition was a hydrostatic pressure head along the wetted perimeters of the channels with water depth gradually dropping downslope. The Morel-Seytoux shape factor mu = q(i) X (K(s)A(0)(1/2)) where q(i) is the rate of infiltration as a function of lambda is plotted. If q(i) X << Q, where X is a characteristic size in the direction of surface flow in the channel, Q is the surface flow rate, that is, for large channels and fast conveyance of surface water, q(i) can be assumed independent of X. Then there is a unique minimum of mu(lambda) at a given A(0). If q(i) is not small, we determine the trench shape of a given A(0), which maximizes the total volume of water infiltrated from the trench. The results in this paper can be used in studies of furrow irrigation in desert agriculture and for evaluation of transmission losses from wadi channels flowing after flash floods. |
英文关键词 | Sand dunes Managed aquifer recharge Surface-subsurface flow Finite elements |
类型 | Article |
语种 | 英语 |
收录类别 | SCI-E |
WOS记录号 | WOS:000983295900007 |
WOS关键词 | SOLUTE TRANSPORT ; WATER-FLOW ; SIMULATION ; RECHARGE ; AQUIFER |
WOS类目 | Engineering, Chemical ; Water Resources |
WOS研究方向 | Engineering ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/395843 |
推荐引用方式 GB/T 7714 | Al-Shukaili, A.,Kacimov, A. R.. Experimental and numerical modelling of constructed channels in the desert sand dunes for MAR applications[J],2023,285:78-82. |
APA | Al-Shukaili, A.,&Kacimov, A. R..(2023).Experimental and numerical modelling of constructed channels in the desert sand dunes for MAR applications.DESALINATION AND WATER TREATMENT,285,78-82. |
MLA | Al-Shukaili, A.,et al."Experimental and numerical modelling of constructed channels in the desert sand dunes for MAR applications".DESALINATION AND WATER TREATMENT 285(2023):78-82. |
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