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不同入滲水頭條件下土壤水分運(yùn)動(dòng)數(shù)值模擬
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國(guó)家自然科學(xué)基金資助項(xiàng)目(50979065);山西省科技攻關(guān)資助項(xiàng)目(2007031069);山西省高等學(xué)校優(yōu)秀青年學(xué)術(shù)帶頭人支持計(jì)劃資助項(xiàng)目;太原市大學(xué)生創(chuàng)新創(chuàng)業(yè)項(xiàng)目(100115109)


Numerical Simulation for Soil Water Movement at Different Infiltration Heads
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    摘要:

    在分析入滲水頭對(duì)土壤水分入滲影響的基礎(chǔ)上,提出了分層計(jì)算假定,,建立了不同入滲水頭作用下土壤水分運(yùn)動(dòng)數(shù)學(xué)模型,,并采用差分法進(jìn)行求解,。在室內(nèi)進(jìn)行了不同入滲水頭土壤水分入滲驗(yàn)證試驗(yàn),,結(jié)果表明,,模型計(jì)算土壤含水率與試驗(yàn)實(shí)測(cè)值具有較高一致性,,最大相對(duì)誤差為4.8%,,表明所建立的不同入滲水頭作用下土壤水分運(yùn)動(dòng)數(shù)學(xué)模型是正確的,求解方法是可行的,。

    Abstract:

    Based on the effect of infiltration head on soil water movement, the assumption of layered calculation was put forward. The model of soil water movement at different infiltration heads was established, and the finite difference method was used to solve it. A series of soil column infiltration experiments at different infiltration heads were conducted to verify the model. The computational soil water contents derived from the model was in accordance with the experimental results, the maximum relative error was 4.8%.It indicates that the mathematic model of soil water movement at different infiltration heads is correct and solving of the model with the finite difference method is feasible.

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王銳,孫西歡,郭向紅,馬娟娟.不同入滲水頭條件下土壤水分運(yùn)動(dòng)數(shù)值模擬[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(9):45-49. Wang Rui, Sun Xihuan, Guo Xianghong, Ma Juanjuan. Numerical Simulation for Soil Water Movement at Different Infiltration Heads[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(9):45-49.

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