圆形桥墩紊流范围数值研究

合理布置桥区航道对于船舶在桥区的安全航行非常重要.桥墩的紊流范围是布置桥区航道时要考虑的一个重要指标.文中分析了顺直航道圆形桥墩紊流范围的相关主控因素.通过设置主控因素的序列数据,数值模拟计算并经回归分析,得出了顺直航道圆形桥墩最大紊流范围的经验表达式.研究结果表明,桥墩最大紊流范围与水面流速和桥墩直径密切相关,且流速和桥墩直径越大,桥墩紊流最大范围也越大.

Research on Round-pier Turbulent Scope in Straight Channel

It is very important for ship＇s navigation to layout the fairway in bridge area reasonably.The turbulent scope of pier,relating directly to traffic accident in bridge area,is an important index to take into account for bridge area＇s fairway layout.In the present paper,the turbulent scope of roundpier in straight channel and relative parameters,such as round-pier＇s diameter,flow＇s velocity and so on,were analyzed by theoretical considerations.It could be concluded that the maximum turbulent scope of round-pier in straight channel was mainly dominated by round-pier＇s diameter and flow＇s velocity in water surface.The larger the round-pier＇s diameter and flow＇s velocity in water surface are,the larger is the maximum turbulent scope of round-pier in straight channel.An empirical expression was presented to calculate the maximum turbulent scope of round-pier in straight channel.