摘要
本文基于有限体积单元格式(FVM格式)建立河道二维水动力模型,并将模型用于河道整治工程流态分析计算中,此外结合断面实测水位和流速数据对构建模型进行验证。研究结果表明:基于FVM格式的浅水二维水动力模型适用于非恒定流的流态计算,计算的断面水位和流速与实测值之间的绝对误差值分别在0.08―0.46m和0.3―2.3m/s之间,相关系数均在0.6782―0.7845之间;相比于整治前,整治后的河道断面流速有所减小,断面过流能力相应增加,有助于区域防洪安全。研究成果对于河道整治工程后防洪影响评价流态分析计算提供方法参考。
In this paper,a two-dimensional hydrodynamic model of river channel is established based on the finite volume element （FVM） scheme, and the model is applied to the analysis and calculation of the river reg- ulation works, and the model is validated with the measured water level and velocity data.The results show that the two-dimensional hydrodynamic model based on FVM is suitable for the unsteady flow calculation, and the absolute error between the calculated water level and the measured value is 0.08m -0.46m and 0.3-2.3m / s, the correlation coefficients are between 0.6782 - 0.7845.After the river regulation,the flow velocity of the river section is reduced and the capacity of the cross-section increases correspondingly,which contributes to regional flood control.The research results can provide reference for the analysis and calculation of the influ- ence of flood control on river re^lation works.
出处
《吉林水利》
2017年第5期1-4,8,共5页
Jilin Water Resources
关键词
有限体积单元格式
二维水动力学模型
河道整治工程
河道流态分析
finite volume element scheme
two-dimensional hydrodynamic model
river regulation project
fiverflow pattern analysis
