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| 河流水质模拟的灰色有限差分解 | |
| 引用本文： | 朱长军,郝振纯,周继红,李树文,赵秀娟. 河流水质模拟的灰色有限差分解[J]. 西安建筑科技大学学报(自然科学版), 2006, 38(3): 433-436 |
| 作者姓名： | 朱长军 郝振纯 周继红 李树文 赵秀娟 |
| 作者单位： | 1. 河海大学水资源环境学院,江苏,南京,210098;河北工程大学城市建设学院,河北,邯郸,056038 2. 河海大学水资源环境学院,江苏,南京,210098 3. 河北工程大学城市建设学院,河北,邯郸,056038 |
| 基金项目： | 河北省自然科学基金资助项目(D2005000463) |
| 摘 要： | 针对河流水环境中信息的不确定性问题,将河流水流速以及弥散系数和衰减系数等参数视作未确知参量,并以灰参数的形式表示,运用灰色理论建立了河流一维水质灰色微分模型.在数值求解过程中,对一维河流水污染的灰色模型求解过程中有限差分法的截断误差进行了修正,得到了具有一种特殊结构的数值模型,并给出了求解方法.通过与解析解和没有修正的灰色解进行对比,表明没有修正的截断误差是不能忽略的.修正后的灰色数值解的灰带更窄而且更加合理. |
| 关 键 词： | 河流水污染 灰参数 水质模拟 灰色模型 截断误差 |
| 文章编号： | 1006-7930（2006）03-0433-04 |
| 收稿时间： | 2005-12-13 |
| 修稿时间： | 2005-12-132006-04-02 |
Grey finite difference solution of river water quality simulation |
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| ZHU Chang-jun,HAO Zhen-chun,ZHOU Ji-hong,LI Shu-wen,ZHAO Xiu-juan. Grey finite difference solution of river water quality simulation[J]. Journal of Xi'an University of Architecture & Technology, 2006, 38(3): 433-436 | |
| Authors: | ZHU Chang-jun HAO Zhen-chun ZHOU Ji-hong LI Shu-wen ZHAO Xiu-juan |
| Affiliation: | 1. College of Water Resources and Environment, Hehai University, Nanjing 210098, China; 2. College of Urban Construction, Hebei University of Engineering, Handan 056038, China |
| Abstract: | In view of the the uncertainty problem in river pollution,velocity and dispersion coefficient and attenuation in river are considered as uncertainty parameters and expressed as gray parameters.One dimensional gray numerical water quality model is built according to gray theory.An especial structural model is obtained through corrected truncation errors of finite difference and the gray numerical arithmetic solving this kind model is given.Comparison with the analytical solution and uncorrected solution,uncorrected truncation errors can not be negligible and the gray scope of corrected gray numerical solution becomes little and reasonable.The study of this paper provides an more reasonable approach for the prediction and prevention of river pollution. |
| Keywords: | water pollution in river gray parameter water quality simulation gray model truncation errors |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |