| 随机输入情况下汇流计算方法的探讨 |
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| 引用本文： | 孙颖娜,芮孝芳.随机输入情况下汇流计算方法的探讨[J].水科学进展,2005,16(5):661-665. |
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| 作者姓名： | 孙颖娜 芮孝芳 |
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| 作者单位： | 河海大学水资源环境学院, 江苏, 南京, 210098 |
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| 基金项目： | 国家自然科学基金资助项目(50309002)~~ |
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| 摘 要： | 大量的实测资料表明,在汇流过程中存在着许多难以预料和控制的不确定性因素。为了更合理的描述汇流过程,建模时应用随机微分方程替代确定性常微分方程。初步探讨了有白噪声输入情况下的线性随机汇流系统,在获得初始条件的随机特性后可以得到汇流模型的解析解和数值解,计算实例表明,在汇流模型建模中引进随机微分方程理论值得深入研究。
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| 关 键 词： | 汇流 随机微分方程 方程 数值解 |
| 文章编号： | 1001-6791（2005）05-0661-05 |
| 收稿时间： | 2004-06-29 |
| 修稿时间： | 2004-09-10 |
Investigation on calculation method for flow concentration with stochastic input |
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| SUN Ying-na,RUI Xiao-fang.Investigation on calculation method for flow concentration with stochastic input[J].Advances in Water Science,2005,16(5):661-665. |
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| Authors: | SUN Ying-na RUI Xiao-fang |
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| Affiliation: | College of Water Resources and Environment, Hohai University, Nanjing 210098, China |
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| Abstract: | Proving by a lot the measured data,There are many unpredictable and uncontrollable factors in the process of flow concentration.The stochastic differential equation is used to replace the ordinary differential equation to describe the process of the flow concentration more reasonable.The linear random flow concentration system with the white noise input is discussed.The analytic and numerical solution of the flow concentration model can be obtained after the randomness of initial condition is solved. |
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| Keywords: | Aflow concentration stochastic differential equation It^0 equation numerical solution |
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