阻流板对双桨船阻力和伴流场影响数值研究  

Numerical Study on the Effect of Interceptors on the Resistance and Wake Field of Twin-Screw Ship

作　　者：宋科委 郭春雨[1] 龚杰[1] 李平[1] 王伟[1] SONG Kewei;GUO Chunyu;GONG Jie;LI Ping;WANG Wei(College of Shipbuilding Engineering,Harbin Engineering University. Harbin 150001. China)

机构地区：[1]哈尔滨工程大学船舶工程学院

出　　处：《上海交通大学学报》2019年第8期957-964,共8页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金(51379043,51209048,51409063);高技术船舶科研项目工信部联装[2016]26号

摘　　要：基于RANS(Reynolds-averaged Navier-Stokes)方法针对安装了3种不同深度阻流板的DTMB5415船模进行数值计算,以研究阻流板对船舶阻力以及伴流场的影响.分析了安装阻流板前后的船舶水动力性能,并探讨了船艉波形、船身压力以及轴向标称伴流场的变化.研究结果表明:阻流板的安装能够降低DTMB5415的阻力,平均减阻率可达4.19%;船体虚长度的增加以及方尾船尾流场的改善是船模总阻力降低的主要原因;阻流板的安装增大了船舶尾部的边界层厚度以及轴向标称伴流,当弗劳德数Fr=0.35时,d/LPP=0.001 5(d为阻流根深度,LPP为船长)的桨盘面平均伴流分数增大了11.9%.Numerical calculation of DTMB5415 ship model with three different depth interceptors were carried out based on RANS(Reynolds-averaged Navier-Stokes)method in order to study the influence of interceptors on the ship resistance and wake field.The hydrodynamic performance of the ship with and without interceptor was analyzed in detail.Meanwhile,the variation of stern waveform,the hull pressure and the axial flow field were discussed.The results shown that the installation of interceptor could reduce the resistance of DTMB5415,and the average drag reduction rate could reach 4.19%.The increase of the virtual length of the hull and the improvement of the tail flow field of the transom stern ship reduced the wave making resistance,which was the main reason for the decrease of the total resistance.The existence of interceptor increased the boundary layer thickness at the ship stern and the axial nominal wake,meanwhile,the average wake fraction at the propeller disk increased by 11.9%when Fr=0.35 and d/LPP=0.001 5,where Fr is Froude rumber,d is the depth of the spoiler and LPP is the length of the ship.

关 键 词：阻流板 伴流分数 双桨船 船舶阻力 

分 类 号：U661[交通运输工程—船舶及航道工程]