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喬灌籬溝蓄溝道土壤水分運(yùn)動(dòng)數(shù)值模
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Simulation for Soil Water Movement of Gutter under Water Conservation in Arbor-shrub-hedge-gutter
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    摘要:

    在分析喬灌籬溝蓄溝道布置和水分運(yùn)動(dòng)特點(diǎn)的基礎(chǔ)上，建立了喬灌籬溝蓄溝道二維非飽和土壤水分運(yùn)動(dòng)模型，采用Galerkin有限單元法對(duì)方程進(jìn)行數(shù)值求解。室內(nèi)驗(yàn)證試驗(yàn)結(jié)果表明，土壤含水率和濕潤鋒的模型計(jì)算值與實(shí)測(cè)值吻合較好，說明喬灌籬溝蓄溝道土壤水分運(yùn)動(dòng)模型正確，采用有限元法求解可行。

    Abstract:

    2-D mathematic model of unsaturated soil moisture movement of gutter on the condition of water conservation in arbor-shrub-hedge-gutter was established based on the theory of soil water dynamics and the characteristics of soil moisture movement. The finite element method was used to solve it. A series of indoor experiments were conducted to verify the model. The computational results derived from the model of water front and soil moisture content were in accordance with the experimental results. It indicated that the mathematic model of soil water movement is correct and solving of the model with finite element method is feasible.

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郭向紅,孫西歡,馬娟娟.喬灌籬溝蓄溝道土壤水分運(yùn)動(dòng)數(shù)值模[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(7):93-97. Simulation for Soil Water Movement of Gutter under Water Conservation in Arbor-shrub-hedge-gutter[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(7):93-97.

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