水利学报2017，Vol.48Issue(2)：168-174,7.DOI:10.13243/j.cnki.slxb.20160327
基于固液两相流模型的泥石流流速垂向分布研究
Study of vertical velocity distribution in debris flow based on solid-liquid two-phase flow model
摘要
Abstract
The vertical velocity distribution of debris flow is one of the key parts of its kinematics.Based on the solid-liquid two-phase flow model,the constitutive relation of debris flow with equal or unequal two-phase velocity was analyzed,and the calculation methods for the vertical velocity distribution were studied.Under the assumption of two-dimensional steady uniform flow,the vertical velocity distribution formula of the solid and liquid phases was deduced in the laminar and turbulent flow regime,and the experimental data of the unsaturated stony debris flow was used to verify the formula.The result indicates that the two phase velocity difference is the nature of the characteristic of the interaction between the solid and liquid phases,and the solid-volume fraction which plays an important role in the vertical velocity distribution calculation is associated with the modular parameters in the constitutive equations.The solid-liquid model-based vertical velocity distribution formula has a more general meaning than the existing formulas,and the calculated value of the formula agrees well with the experimental data.关键词
泥石流/流速的垂向分布/固液两相流Key words
debris flow/vertical velocity distribution/solid-liquid two-phase flow分类
天文与地球科学引用本文复制引用
乐茂华,韩其为,方春明..基于固液两相流模型的泥石流流速垂向分布研究[J].水利学报,2017,48(2):168-174,7.基金项目
国家科技支撑计划项目(2013BAB12B02,2013BAB12B01) （2013BAB12B02,2013BAB12B01）
国家国际科技合作专项(2015DFR70980) （2015DFR70980）
