| 复杂输水系统水力过渡的数值方法比较及适用性分析 |
| |
| 引用本文： | 穆祥鹏,练继建,刘瀚和.复杂输水系统水力过渡的数值方法比较及适用性分析[J].天津大学学报(自然科学与工程技术版),2008,41(5):515-521. |
| |
| 作者姓名： | 穆祥鹏 练继建 刘瀚和 |
| |
| 作者单位： | 天津大学建筑工程学院,天津300072 |
| |
| 基金项目： | 国家自然科学基金
,
国家自然科学基金 |
| |
| 摘 要： | 不同数值方法在求解不同复杂输水系统水力过渡问题时，会体现出各自的特点及不同程度的适用性、因此，针对不同的输水方式和水力过渡类型来选择合适的数值方法，既可以保证计算精度，又可以提高计算速度．针对输水系统的无压流、有压流、无压接有压、明满流交替等不同过渡过程，对特征线法和隐式差分法进行了对比，分析了这2种方法的特点，研究和确定了2种方法在不同输水方式和水流状态下的适用性．
|
| 关 键 词： | 复杂输水系统 水力过渡过程 数值方法 特征线法 Preissmann四点隐格式 |
Comparison and Applicability Analysis of Numerical Methods for Transient of Complex Water Diversion System |
| |
| MU Xiang-peng,LIAN Ji-jian,LIU Han-he.Comparison and Applicability Analysis of Numerical Methods for Transient of Complex Water Diversion System[J].Journal of Tianjin University(Science and Technology),2008,41(5):515-521. |
| |
| Authors: | MU Xiang-peng LIAN Ji-jian LIU Han-he |
| |
| Institution: | ( School of Civil Engineering, Tianjin University, Tianjin 300072, China ) |
| |
| Abstract: | Various numerical methods for transient of various complex water diversion systems have their respective characteristics and applicability. Suitable numerical solutions to various water diversion modes and transient types can not only ensure calculation accuracy, but also increase computing speed. Comparison between characteristic line method and implicit difference method was done based on simulation results of the transient of free flow, pressure flow, free flow connected with pressure flow and free-pressure flow of water diversion system. The characteristics of the two methods were analyzed and the applicability of the two methods to different water diversion modes and transient types was determined. |
| |
| Keywords: | complex water diversion system hydraulic transient numerical method characteristic line method Preissmann implicit 4-node scheme |
| 本文献已被 维普 万方数据 等数据库收录！ |
