水利水电科技进展2017，Vol.37Issue(4)：14-18,5.DOI:10.3880/j.issn.1006-7647.2017.04.003
水下夯锤绕流阻力系数变化规律的数值模拟
Numerical simulation of change in flow resistance coefficient of underwater hammer
黄建生 1梁邦炎 1王小平2
作者信息
- 1. 中交第四航务工程局有限公司,广东 广州 510290
- 2. 中交四航局港湾工程设计院有限公司,广东 广州 510231
- 折叠
摘要
Abstract
Change in the flow resistance coefficient of underwater hammers was analyzed through comparison of common types of hammers in multiple projects based on the LS-DYNA fluid-structure coupling numerical simulation method. The results show that, when the hydrostatic pressure on the bottom surface of the hammer is a fixed value, the flow resistance coefficient decreases with the increase of the hammer mass. The hammer fall velocity in the water increases with the drop distance, but the growth rate gradually decreases and tends toward a stable value. The energy usage ratio of the hammer decreases with the increase of the drop distance. When the hydrostatic pressure on the bottom surface is a fixed value, the energy dissipation rate increases with the decrease of the hammer mass.关键词
夯锤/水下运动/绕流阻力系数/能量耗散率Key words
hammer/underwater movement/flow resistance coefficient/energy dissipation rate分类
建筑与水利引用本文复制引用
黄建生,梁邦炎,王小平..水下夯锤绕流阻力系数变化规律的数值模拟[J].水利水电科技进展,2017,37(4):14-18,5.
