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基于遺傳算法的非飽和溶質(zhì)運(yùn)移參數(shù)優(yōu)化
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國(guó)家自然科學(xué)基金資助項(xiàng)目（50979089）


Optimization of Solute Transport Parameters in Unsaturated Soil Based on Genetic Algorithm
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    摘要:

    根據(jù)室內(nèi)實(shí)驗(yàn)和數(shù)值模擬數(shù)據(jù),分別以土壤含水率和溶質(zhì)質(zhì)量濃度的實(shí)測(cè)值與其計(jì)算值標(biāo)準(zhǔn)差最小為優(yōu)化目標(biāo),建立溶質(zhì)和水分運(yùn)移參數(shù)識(shí)別的多目標(biāo)優(yōu)化模型,采用遺傳算法、有限差分法和線(xiàn)性加權(quán)法相結(jié)合的計(jì)算方法,對(duì)模型進(jìn)行優(yōu)化求解。分別以單組、2組和3組時(shí)刻實(shí)驗(yàn)數(shù)據(jù)組合作為參數(shù)優(yōu)化初始數(shù)據(jù),獲取了土壤非飽和水分和溶質(zhì)運(yùn)移參數(shù)值,并以1345min時(shí)刻實(shí)驗(yàn)數(shù)據(jù)進(jìn)行驗(yàn)證。含水率計(jì)算值與實(shí)測(cè)值相關(guān)系數(shù)的最大值和最小值分別為0.9753和0.9450；溴離子溶液質(zhì)量濃度的計(jì)算值與實(shí)測(cè)值相關(guān)系數(shù)最大值和最小值分別為0.9646和0.9352,實(shí)測(cè)值與計(jì)算值吻合較好,表明用這一方法識(shí)別非飽和水分—溶質(zhì)運(yùn)移參數(shù)是可行的。

    Abstract:

    According to the experiment and numerical simulation, a multi-objective optimization model for identification of solute and water transport parameters was built up, which use soil water content and the minimum standard deviation of measured and observed water content and solute as optimized objective. A combination of genetic algorithm, finite difference and linear weighted method was applied for calculation. Taking one, two and three groups experimental data as initial data, solute transport parameters in unsaturated soil were obtained and verified by using the experimental data at 1345min. The maximum and minimum correlation coefficient between calculated and measured value of water content were 0.9753 and 0.9450. The maximum and minimum correlation coefficient between calculated and measured value of bromonium ion concentration was 0.9646 and 0.9352. The measured results were well coincided with the calculated results and showed the feasibility of the proposed method.

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任長(zhǎng)江,白丹,周蓓蓓,梁偉,周文,程鵬.基于遺傳算法的非飽和溶質(zhì)運(yùn)移參數(shù)優(yōu)化[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(9):68-72. Ren Changjiang, Bai Dan, Zhou Beibe, Liang Wei, Zhou Wen, Cheng Peng. Optimization of Solute Transport Parameters in Unsaturated Soil Based on Genetic Algorithm[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(9):68-72.

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  • 在線(xiàn)發(fā)布日期: 2013-09-11
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