耙吸挖泥船泥舱消能结构特性数值研究  

Numerical study on energy dissipation structure characteristics of hopper of trailing suction hopper dredger

作　　者：舒敏骅 余竞 张忱 冒小丹 洪国军 陈科[4] SHU Min-hua;YU Jing;ZHANG Chen;MAO Xiao-dan;HONG Guo-jun;CHEN Ke(CCCC National Engineering Research Center of Dredging Technology and Equipment Co.,Ltd.,Shanghai 201208,China;Key Laboratory of Waterway Dredging Technology of Ministry of Transport,Shanghai 201208,China;Shanghai Waterway Engineering Design and Consulting Co.Ltd.,Shanghai 200120,China;State Key Laboratory of Ocean Engineering,Collaboration Innovation Center for Advanced Ship and Deep-Sea Exploitation Equipment,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]中交疏浚技术装备国家工程研究中心有限公司,上海201208 [2]航道疏浚技术交通行业重点实验室,上海201208 [3]中交上海航道勘察设计研究院有限公司,上海200120 [4]上海交通大学,海洋工程国家重点实验室高新船舶与深海开发装备协同创新中心,上海200240

出　　处：《水运工程》2021年第8期207-212,共6页Port & Waterway Engineering

摘　　要：耙吸挖泥船泥舱的消能结构对装舱溢流损失有着重要的影响。采用数值计算方法对原型、对冲和45°挑高对冲共3种泥舱模型的进流结构进行了对比研究。计算结果显示:1)与原型相比,对冲和45°挑高对冲的泥舱内部流场的旋涡分布较为集中。2)进流管路的出流扩散范围基本位于进流管路的出口附近区域。3)泥舱内其它区域的流速及湍流强度均要小于原型,尤其在溢流筒附近区域湍流强度衰减更为明显。说明对冲和45°挑高对冲结构起到了一定的消能作用,将有利于泥舱装舱过程中泥沙的沉积,达到提高装舱效率的目的。The energy dissipation structure of the hopper has an important influence on the overflow loss of the trailing suction hopper dredger. Three kinds of inflow structures of the hopper, i.e. the prototype, the colliding, and the 45-degree high-lift colliding, are compared by the numerical calculation method in this paper. The calculation results show that: 1)Compared with the prototype, the vortex distribution of the flow field in the hopper with the colliding and the 45-degree high-lift colliding is relatively concentrated.2)The outflow diffusion range is located in the zones near the outlet for the inflow pipe. 3)The velocity and the turbulence intensity in other zones of the hopper are smaller than the prototype, the turbulence intensity attenuation is more obvious especially in the area near the overflowing cylinder. This shows that the colliding and the 45-degree high-lift colliding structures have a certain energy dissipation effect, which will be conducive to sand sedimentation in the process of loading of the hopper, and achieve the purpose of improving the loading efficiency.

关 键 词：耙吸挖泥船 泥舱 消能 数值计算 

分 类 号：U615.3512[交通运输工程—船舶及航道工程]