| 基于标量有限体积法的灌溉末级渠系非恒定水流模型 |
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| 引用本文： | 章少辉,刘群昌,白美健,徐景东.基于标量有限体积法的灌溉末级渠系非恒定水流模型[J].灌溉排水学报,2013,32(3):1-5. |
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| 作者姓名： | 章少辉 刘群昌 白美健 徐景东 |
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| 作者单位： | 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038;中国水利水电科学研究院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： | 国家科技支撑课题，国家自然科学基金项目，中国水利水电科学研究院科研专项 |
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| 摘 要： | 通过区分明渠非恒定流中对流波与重力波属于不同的物理过程,把渠道非恒定流控制方程进行了变形处理,基于标量有限体积法构建了具备高精度和分辨率的灌溉末级渠系非恒定流数值模型。基于文献数据及野外实测数据,对模型的模拟性能进行了验证。结果表明,构建的模型模拟的斗渠和农渠水位值与实测值之间的平均相对误差为2.8%～4.1%,水量平衡误差不大于0.07%,具备良好的模拟性能,为开展末级渠系布置模式及管理研究提供了可靠的数值工具。
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| 关 键 词： | 末级渠系 非恒定流 标量有限体积法 精度 分辨率 |
Unsteady Water flow Numerical Model for Irrigation Final Canal System Based on Scalar Finite-volume Method |
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| ZHANG Shao-hui,LIU Qun-chang,BAI Mei-jian,XU Jing-dong.Unsteady Water flow Numerical Model for Irrigation Final Canal System Based on Scalar Finite-volume Method[J].Journal of Irrigation and Drainage,2013,32(3):1-5. |
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| Authors: | ZHANG Shao-hui LIU Qun-chang BAI Mei-jian XU Jing-dong |
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| Institution: | 1,2(1.State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100038,China;2.National Center of Efficient Irrigation Engineering and Technology Research,China Institute of Water Resources and Hydropower Research,Beijing 100048,China) |
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| Abstract: | The advection and diffusion process was specified for unsteady water flow in open channel and the corresponding governing equation was reformulated.Then the unsteady water flow numerical model of final canal system with high accuracy and resolution was proposed based on the scalar finite-volume method.According to the data from references,the proposed model was validated.Results showed that the proposed model could well simulate the unsteady water flow in final canal system with the average relative errors between observed data and simulated data of 2.8% ～4.1% and the water balance error below 0.07%for two typical experimental examples.Correspondingly,the proposed unsteady water flow numerical model had well simulation performance and provided a good tool for the distribution mode research of final canal system and basin. |
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| Keywords: | final canal system unsteady water flow scalar finite-volume method accuracy resolution |
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