Estimation of Longitudinal Dispersion Coefficient in Ice-Covered Rivers--论文发表-槐文信课题组

简介

Flow structure and dispersion characteristics change significantly in ice-covered channels and rivers, and the longitudinal dispersion coefficient is an important parameter for water pollution control and environmental protection. Considering the secondary flow in ice-covered channels and based on the Shiono and Knight method (SKM), the lateral distribution of the depth-averaged velocity in ice-covered channels is solved in this study by adopting a power series. The result agrees well with the original analytical solution and experimental data. The longitudinal dispersion coefficient caused by nonuniform distribution of transverse velocity is derived using Fischer’s triple integral formula, and the longitudinal dispersion coefficient formula in a rectangular experimental ice-covered channel is obtained by regression analysis, which coincides with the experimental results. The computational formula of longitudinal...