| 基于均匀混合假设的天然河道水质模拟方法 |
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| 引用本文： | 韩龙喜,陆建华.基于均匀混合假设的天然河道水质模拟方法[J].水文,2002,22(4):5-7. |
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| 作者姓名： | 韩龙喜 陆建华 |
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| 作者单位： | 河海大学水文水资源及环境学院,江苏,南京,210098 |
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| 基金项目： | 江苏省自然科学基金资助项目(BK2001017) |
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| 摘 要： | 扩散质进入窄浅型河道后,通常采用有限差分法求解一维对流分散方程进行水质模拟,计算相对复杂。为简化计算,提出了根据河道断面特征等水力特性,将河道划分为若干单元,忽略不灵敏因子分散项对单元间扩散质交换的影响,并引入单元均匀混合假定,提出了基于均匀混合假设的天然河道水质模拟方法,建立相应的水质数学模型。算例表明,该模型运算稳定,与有限差分法模拟精度相当,但可大大简化并节省计算工作量。
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| 关 键 词： | 窄浅型河道 扩散质 均匀混合 水质模拟 |
| 文章编号： | 1000-0852(2002)04-0005-03 |
| 修稿时间： | 2001年9月7日 |
Narrow and Shallow River Water Quality Model Based on Sub-Channel Pollutant Distribution being Uniform |
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| HAN Long-xi,LU Jian-hua.Narrow and Shallow River Water Quality Model Based on Sub-Channel Pollutant Distribution being Uniform[J].Hydrology,2002,22(4):5-7. |
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| Authors: | HAN Long-xi LU Jian-hua |
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| Abstract: | According to its hydraulic feature and pollutant distribution,a natural river can be divided into many sub-channels that are called cell.Assuming that the pollutant distribution in any cell is uniform,ignoring the diffusion transportation between adjacent cells,this paper builds a water quality model for narrow shallow river.Because of its clear principle,good exactness and especially the very simple calculation,it can be widely used in many fields. |
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| Keywords: | narrow shallow channel diffusion uniform pollutant distribution water quality simulation |
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