Effect of Shear Velocity on Fluctuation Energy for Collisional Granular Flows of Frictional Particles at Flat Walls

被引：0
|
作者：
Zhang, Lei [1 ]
Guan, Jianzhao [1 ]
Wang, Yousheng [1 ]
Wang, Dayu [1 ]
机构：
[1] China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China
来源：
WORLD ENVIRONMENTAL AND WATER RESOURCES CONGRESS 2019: HYDRAULICS, WATERWAYS, AND WATER DISTRIBUTION SYSTEMS ANALYSIS | 2019年
基金：
美国国家科学基金会; 国家重点研发计划;
关键词：
collisions; shear effect; flux of fluctuation energy; kinetic theory of granular flows; BOUNDARY-CONDITIONS; KINETIC-THEORY; ROUGH; DENSE;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The flux of fluctuation energy for collisional particles, which plays an important role in bounded granular flows, was investigated based on the kinetic theory for granular flows. In order to determine the fluctuation energy during collisions between solid walls and particles experiencing apparent shears, a second-order approximation solution to the Boltzmann equation to determine the velocity distribution function of particles was used, which makes it possible for us to discuss how a shear rate affects the fluctuation energy flux in bounded granular flows. Comparisons with numerical simulations and previous theories were presented, which shows that the predicted fluctuation energy flux and simulation results are in well agreement under different conditions.
引用
收藏
页码：89 / 98
页数：10
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