水利水电科技进展2017，Vol.37Issue(6)：44-47,53,5.DOI:10.3880/j.issn.1006-7647.2017.06.008
基于流速幂级数解的明渠纵向离散系数计算方法
Computation of longitudinal dispersion coefficient in open channels based on power series solution to velocity distribution
摘要
Abstract
The longitudinal dispersion coefficient is usually computed directlyby empirical formulas or indirectly through introducing empirical formulas during the solution tovelocity distributions,which cannot fully reflect the physical mechanisms of dispersion.Based on the one-dimensional governing equation of river dynamics,a method to calculate longitudinal dispersion coefficient involving a power series solution to velocity distributionwas proposed.This formulation has been extended to the applications in 104 natural rivers with simplified rectanglecross-sections.The computed values are in the same order of magnitudes with the measured ones,indicating acceptable results.关键词
纵向离散系数/明渠/幂级数/流速分布Key words
longitudinal dispersion coefficient/open channel/power series/velocity distributions分类
建筑与水利引用本文复制引用
张文俊,胡煜,任华堂,夏建新..基于流速幂级数解的明渠纵向离散系数计算方法[J].水利水电科技进展,2017,37(6):44-47,53,5.基金项目
国家自然科学基金(51479218) （51479218）
