蓄水坑灌單坑土壤水分運動模型的有限體積法求解

doi:10.3969/j.issn.1000-1298.[year].[issue].[sequence]

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蓄水坑灌單坑土壤水分運動模型的有限體積法求解
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                        10.3969/j.issn.1000-1298.[year].5.[sequence]
                    
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基金項目:國家自然科學(xué)基金資助項目（50979065）和山西省科技攻關(guān)資助項目（2007031069）

Numerical Simulation for Single Pit Soil Water Movement of Water Storage Pit Irrigation

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摘要:

基于土壤水分運動的動力學(xué)方程,，建立了蓄水坑灌單坑土壤水分運動的數(shù)學(xué)模型及邊界條件，利用有限體積法對模型進行了求解,。為了驗證所建模型的準確性,，在室內(nèi)進行了蓄水單坑水分入滲試驗。模擬結(jié)果和試驗結(jié)果的對比表明,，土壤濕潤鋒和含水率的模擬值與實測值吻合較好,，說明所建立的蓄水單坑二維土壤水分運動模型是正確的，采用有限體積法求解是可行的,。該模型可作為預(yù)測蓄水坑灌條件下單坑土壤水分運動的有效工具,。

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Based on the theory of soil water dynamic, a simulating model and boundary conditions for the soil water of water storage single pit irrigation were established, and the model was numerically solved by finite volume method. The results showed that good agreement was obtained between simulated and measured wetting front and soil moisture content. It indicated that the mathematic model was correct and the model solving with finite volume method was feasible. It is concluded that the model could be used to implement water transport in soil under the water storage single pit. 

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李京玲,孫西歡,馬娟娟,李建文,張文杰.蓄水坑灌單坑土壤水分運動模型的有限體積法求解[J].農(nóng)業(yè)機械學(xué)報,2011,42(5):63-67,85. Li Jingling, Sun Xihuan, Ma Juanjuan, Li Jianwen, Zhang Wenjie. Numerical Simulation for Single Pit Soil Water Movement of Water Storage Pit Irrigation[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(5):63-67,85.

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