耙头高压冲水喷嘴流场数值模拟及分析  

Numerical simulation and analysis of flow field in high-pressure flushing nozzle of drag head

作　　者：陈浩 孙守胜 郭志勇 CHEN Hao;SUN Shou-sheng;GUO Zhi-yong(CCCC Tianjin Dredging Co.,Ltd.,Tianjin 300461,China;Tianjin Key Laboratory for Dredging Engineering Enterprises,Tianjin 300457,China)

机构地区：[1]中交天津航道局有限公司,天津300461 [2]天津市疏浚工程技术企业重点实验室,天津300457

出　　处：《水运工程》2022年第2期202-208,共7页Port & Waterway Engineering

摘　　要：针对耙吸挖泥船耙头高压冲水喷嘴流场,采用CFD技术进行喷嘴淹没射流数值模拟计算。分析不同喷嘴直径、不同出口射流速度、不同靶距及不同射流喷射角度条件下的射流压力。其他参数不变的情况下,泥面所受到的压力随射流速度的提高而增大、随喷嘴直径增大而略微增加、随靶距增大而减小。喷射角度为90°、60°和45°时,同等射流速度下喷射角度为90°时泥面受到的压力值最大,但从破土量角度来看,60°为最佳喷射角度。Aiming at the flow field in the high-pressure flushing nozzle of the drag head on trailing suction hopper dredgers,this paper conducted the numerical simulation of the submerged jet of the nozzle by CFD technology.The jet pressures under different nozzle diameters,exit jet velocities,target distances,and jet angles are analyzed.When the other parameters remain unchanged,the pressure on the mud surface increases with the rise in the jet velocity,slightly increases with the enlargement of nozzle diameter,and decreases with the increase in target distance.When the jet angles are 90°,60°,and 45°,the pressure on the mud surface is the largest under 90°at the same jet velocity,while 60°is the best jet angle in terms of soil breaking amount.

关 键 词：耙吸挖泥船 高压冲水系统 喷嘴 流场数值模拟 

分 类 号：U616[交通运输工程—船舶及航道工程]