| 成层土上畦灌非恒定流方程的求解 |
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| 引用本文： | 刘才良,路振广.成层土上畦灌非恒定流方程的求解[J].河海大学学报(自然科学版),1993,21(3):59-65. |
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| 作者姓名： | 刘才良 路振广 |
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| 作者单位： | 河海大学农田水利工程系，河南省水利厅 |
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| 摘 要： |
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| 关 键 词： | 成层土 畦灌 非恒定流 数值模拟 |
A Solution of Mathematical Model of Unsteady Flow for Border Irrigation on Layered Soils |
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| Liu Cailiang Lu Zhenguang Dept. of Irrigation and Drainage Engineering,Hohai Univ. Water Consvancy.A Solution of Mathematical Model of Unsteady Flow for Border Irrigation on Layered Soils[J].Journal of Hohai University (Natural Sciences ),1993,21(3):59-65. |
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| Authors: | Liu Cailiang Lu Zhenguang Dept of Irrigation and Drainage Engineering Hohai Univ Water Consvancy |
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| Institution: | Liu Cailiang Lu Zhenguang Dept. of Irrigation and Drainage Engineering,Hohai Univ. Water Consvancy Department of Honan province |
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| Abstract: | Agricultural soil, affected by long time cultivation and developing processes, is divided into topsoil and subsoil. Considering the difference in physical properties between different layers of soil, a mathematical model of unsteady flow in border irrigation is constructed by means of Saint-Venant model combined with the improved Green-Ampt infiltration model. The numerical solution is in good agreement with field observation. On this basis the optimum combination of technical parameters can be determined for border irrigation. The results of the study provide a basis for water management for irrigation districts. |
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| Keywords: | layered soils border irrigation unsteady flow infiltration model numerical simulation |
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