明渠非恒定流的特征线解法  

Method of the Characteristic Lines for Numerical Computation of Unsteady Open Channel Flow

作　　者：万晖[1] 

机构地区：[1]河海大学水利水电工程学院,南京210098

出　　处：《黑龙江水专学报》2006年第1期20-22,共3页Journal of Heilongjiang Hydraulic Engineering College

摘　　要：长距离输水明渠中,常遇到闸门启闭过程中,渠中水面波动比较剧烈,导致漫堤的情况,严重的可能会引起渠堤失稳滑坡。利用特征线法对描述明渠中水流运动状态的圣维南方程组进行求解,编制程序求解了简单输水模型中,闸门启闭情况下渠中各断面水深的变化情况,为分析复杂情况提供参考。While the strobe is opening or shutting, the surface in the long distance open channel often fluctuates acutely and overflows the bank. Moreover if the instance is serious, it may cause the bank coasted. The article uses the method of the characteristic lines in solution of the Saint-Venant equation group of describing the state of current movement in the open channel, and programs and calculates the depth of water in the channel when the strobe is opening or shutting in the simple model of transforming water, therefore provides the basis for ana- lyzing complex situations.

关 键 词：长距离输水明渠 非恒定流 特征线法 

分 类 号：TV133.2[水利工程—水力学及河流动力学]