框架墩式码头结构绕流数值模拟  

Numerical simulation of flow around frame dolphin pier structure

作　　者：吕启兵 杨斌[2] 刘明维[2] 李鹏浩 

机构地区：[1]中交第二航务工程勘察设计院有限公司,湖北武汉430071 [2]重庆交通大学河海学院,重庆400074 [3]温州港集团有限公司,浙江温州325100

出　　处：《水利水运工程学报》2014年第6期22-29,共8页Hydro-Science and Engineering

基　　金："十二五"国家科技支撑计划资助项目(2012BAB05B00)

摘　　要：基于FLUENT软件,针对不同方柱排列组合进行绕流数值模拟,得到不同间距比时各方柱水流阻力系数及三维流场情况,探寻框架墩式结构水流力分布规律。计算结果表明,简单的双方柱串、并联时,方柱阻力变化较有规律;双排并列三方柱绕流时,第一排方柱阻水作用显著,处于尖角位置的方柱绕流参数呈现对称现象,各方柱阻力明显增大,但阻力变化已无规律可循;当上下横撑间距为3倍横撑直径时,相互间影响已经较小;处于上游第一排横撑的水流阻力系数与单方柱时基本相同,第二排横撑所受水流阻力明显减小,与水流方向一致的纵撑其水流阻力可忽略不计。Based on the FLUENT software,different permutations and combinations of square cylinders are used to simulate the flow around frame dolphin pier structure,and get the resistance coefficients and the three dimensional flow field of each square column with different spacing ratios,and explore the law of the flow force distribution on the structure. The calculation results show that the square column resistance changes regularly in series and tied for simply two columns. When two rows of three square columns are used,the first row of the square columns blocks the water remarkably. The parameters of the flow around the square columns in the sharp corners position are symmetric,the resistance of each square column increases obviously,but haphazard. When the fluctuation cross arm spacing is 3 d,it has a little effect on each other. The resistance coefficient of lateral cross arm is basically the same in the first row at the upstream,and the flow resistance of lateral cross arm of the second row decreases obviously. The flow resistance of the vertical support can be neglected. The flow resistance of the vertical cross arm can be ignored with the flow in the same direction.

关 键 词：码头 水流力 方柱 阻力系数 数值模拟 

分 类 号：TV135.6[水利工程—水力学及河流动力学] U656.122[交通运输工程—港口、海岸及近海工程]