| 地下滴灌条件下水热运移数学模型与验证 |
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| 引用本文： | 王建东,龚时宏,马晓鹏,于颖多.地下滴灌条件下水热运移数学模型与验证[J].水利学报,2010,41(3). |
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| 作者姓名： | 王建东 龚时宏 马晓鹏 于颖多 |
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| 作者单位： | 中国水利水电科学研究院,水利研究所,北京,100048;国家节水灌溉北京工程技术研究中心,北京,100048 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划)，国家高技术研究发展计划(863计划) |
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| 摘 要： | 基于土壤水、热运动基本方程,结合地下滴灌水分运动特点,建立了地下滴灌水热运移数学模型。利用HYDRUS-2D软件对模型进行了求解,并用田间实测数据进行验证。模拟和验证结果表明,模型对地下滴灌条件下的土壤水分和土壤温度运移变化动态的模拟效果较好,该水热运移数学模型可以用来监测和调控作物生长所需的土壤水、热环境条件。模拟值和实测值的结果对比表明,上层土壤的水分和温度的模拟值较下层土壤值差异较明显,且数值波动大,主要原因是上层土壤易受到土壤蒸发和大气温度剧烈波动的影响。
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| 关 键 词： | 地下滴灌 水热运移 数学模型 验证 |
Verification and application of mathematical model for simulating water flow and heat transport in subsurface drip irrigation |
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| WANG Jian-dong,GONG Shi-hong,MA Xiao-peng and YU Ying-duo.Verification and application of mathematical model for simulating water flow and heat transport in subsurface drip irrigation[J].Journal of Hydraulic Engineering,2010,41(3). |
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| Authors: | WANG Jian-dong GONG Shi-hong MA Xiao-peng and YU Ying-duo |
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| Affiliation: | WANG Jian-dong1,2,GONG Shi-hong1,MA Xiao-peng1,YU Ying-duo1,2(1.China Institute of Water Resources , Hydropower Research,Beijing 100048,2.National Center of Efficient Irrigation Engineering , Technology Research Beijing 100048) |
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| Abstract: | A mathematical model was set up by integrating the basic equation of soil water and heat movement with characteristics of water movement under subsurface drip irrigation,The HYDRUS-2D software was used to solve the mathematical model.The comparison of simulation value with observation data obtained from field measurement showes that the mathematical model can be satis-factorily used to describe the soil water and heat transport properties and can be used for monitoring and adjusting soil water and heat dist... |
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| Keywords: | subsurface drip irrigation water- heat transport mathematical model verification |
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