耙吸挖泥船环保溢流筒不同角度环保阀数值模拟  

Numerical simulation of green valve in different angles of environmental overflow pipe of trailing suction dredger

作　　者：石启正 郑金龙 SHI Qi-zheng;ZHENG Jin-long(CHEC Dredging Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]中港疏浚有限公司,上海200120

出　　处：《水运工程》2020年第11期181-185,共5页Port & Waterway Engineering

摘　　要：为了解环保溢流筒在实船上的应用效果及控制策略,结合耙吸挖泥船的实际泥舱尺寸,采用CFX中的均相流模型,对泥舱中环保溢流筒不同角度环保阀进行数值模拟,得到环保阀不同角度时溢流筒内的气体体积分数云图。结果表明:1)环保阀可以明显减少空气进入溢流筒,其中环保阀水平夹角为30°时显著减少环保溢流筒气体含量。2)入口位置及环保溢流筒工作状态也影响溢流液中气泡含量。In order to understand the application effect and control strategy of environmental protection overflow pipe on the actual ship,combined with the actual mud tank size of the trailing suction dredger,the numerical simulation of the green valve in different angles of environmental overflow pipe is carried out by using the homogeneous flow model in CFX,then the air volume fraction in the overflow pipe with different horizontal angle of green valve is obtained.The results show that:1)The green valve can significantly reduce the air entering the overflow pipe,and the volume fraction of the overflow pipe is significantly reduced when the horizontal angle of the green valve is 30°.2)The inlet position and the working state of the overflow pipe also affect the air bubble content of the overflow liquid.

关 键 词：泥舱模型 环保溢流筒 环保阀 气体体积分数 

分 类 号：U674.31[交通运输工程—船舶及航道工程]