水资源与水工程学报2013，Vol.24Issue(2)：10-14,5.
浮冰块底面水压力分布的数值模拟研究
Numerical simulation of pressure distribution at bottom of floating ice block
摘要
Abstract
When floating ice block meets resistance in the process of movement, it will rest against the ice cover or become entrained in the flow. The behaviors of floes rely on the hydrodynamic forces acting on floes. By applying RNG k - e turbulence model and VOF method, numerical simulation was made to the pressure distribution of the bottom beneath a floating ice block. The comparison between physical model experimental results and numerical simulation results was conducted, and they are in good agreement, which proved that the simulation results are reasonable and reliable. The results of numerical calculation show that the pressure distribution depends on the shape of ice, ice thickness and flow velocity. A ice block with a rounded leading edge has a weaker leading - edge effect compared to the rectangle ice block, and they have the same Venturi effect. Therefore, the magnitude and length of the maximum pressure differential at the leading edge of the round ice block are smaller than the rectangle ice block, but they have the same Venturi pressure. When ice thickness or flow velocity increases, the pressure differential beneath ice block will increase, and the pressure reduction zone will be longer and the pressure recovery rate will be slower.关键词
浮冰块/压力分布/数值模拟/RNG k-ε紊流模型/VOF法Key words
floating ice block/ pressure distribution/ numerical simulation/ RNG k - e turbulence model/VOF method分类
数理科学引用本文复制引用
罗昉昕,赵新..浮冰块底面水压力分布的数值模拟研究[J].水资源与水工程学报,2013,24(2):10-14,5.基金项目
国家重大科技专项(2012ZX07205005) （2012ZX07205005）
国家创新研究群体科学基金(51021004) （51021004）
长江学者和创新团队发展计划(IRT0851) （IRT0851）
