长江科学院院报2017，Vol.34Issue(12)：7-11,16,6.DOI:10.11988/ckyyb.20170785
抓斗下降时流场和最优下降方式的数值计算
Numerical Calculation of Flow Field and Optimal Operation During the Drop of Grab Bucket
龙瑞 1Tomoaki Nakamura 2Yonghwan Cho 2Norimi Mizutani 2Tsuyoshi Kanazawa3
作者信息
- 1. 长江科学院河流研究所,武汉430010
- 2. Nagoya University, Nagoya 464-8603, Japan
- 3. TOYO Construction Co., Ltd., Hyogo 663-8142, Japan
- 折叠
摘要
Abstract
It is essential to effectively reduce the generation of turbidity and pollution in dredging works.In this paper,the flow field during the drop of a sealed grab bucket was simulated with a three-dimensional coupled fluidstructure-sediment-seabed interaction model (FS3M),and the impact of different drop modes on turbidity was discussed in order to propose the optimal drop operation for reducing the turbidity effectively.Numerical results showed that a decrease in the drop speed of the bucket could effectively reduce flow velocity at the bottom,suggesting a reduction in the generation of turbidity from the bottom.In particular,reducing the drop speed of grab bucket to one-third at 3 meters from the bottom is found to be the most effective.关键词
疏浚作业/抓斗/下降方式/流场扰动/数值计算/水体浑浊Key words
dredging/grab bucket/drop operation/flow field disturbance/numerical analysis/water turbidity分类
交通工程引用本文复制引用
龙瑞,Tomoaki Nakamura,Yonghwan Cho,Norimi Mizutani,Tsuyoshi Kanazawa..抓斗下降时流场和最优下降方式的数值计算[J].长江科学院院报,2017,34(12):7-11,16,6.
