【作者】 穆锦斌； 张小峰； 张艳霞； 屈文谦；

【Author】 Mu Jin-bin Zhang Xiao-feng Zhang Yan-xia Qu Wen-qian (State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, China 430072)

【机构】 武汉大学水资源与水电工程科学国家重点实验室；

【摘要】 分蓄洪区运用前,采用数学模型对区内洪水演进作出预报是一项必不可少的工作。对于复杂边界问题,本文引进了斜对角笛卡尔方法,较传统的笛卡尔法, 该方法能更好的贴近实际水边线。在此基础上,对原有的平面二维分蓄洪区水流数学模型进行了改进。经检验,模型能更好模拟复杂边界处水流运动规律,拟合精度较高。改进后的模型运用到湖北龙骨湖、沉底湖分蓄洪区实际计算中,取得了令人满意的结果。更多还原

【Abstract】 Forecasting of flood propagation process in the flood retention area is a basic work for the operation of it. In this paper, the diagonal Cartesian method was adopted to fit the irregular boundary like the flood retention area. Based on this, a horizontal 2D model for flow simulation in the flood retention area originally developed using traditional Cartesian method was improved. Comparison of simulated result shows that the model thus improved can give more reasonable flow field. Finally, the model improved was applied to the flood retention area of Longgu Lake and Chendi Lake in Hubei province,China,and obtained a satisfying result.更多还原