基于RANS法螺旋桨毂帽鳍水动力性能数值研究  

Numerical Study on the Hydrodynamic Performance of PBCF Based on RANS Method

作　　者：胡俊明[1] 李铁骊[1] 林焰[1] 郭灯 

机构地区：[1]大连理工大学船舶工程学院,辽宁大连116024

出　　处：《船海工程》2015年第1期52-55,59,共5页Ship & Ocean Engineering

基　　金：国家公益性行业科研专项(201003024);国家自然科学基金(51209034)

摘　　要：分析研究螺旋桨毂帽鳍水动力性能,应用RANS法处理数值粘性流场,数值过程采用FORTRAN语言处理螺旋桨毂帽鳍型值点数据格式以导入GAMBIT前处理软件进行建模。对DTMB4119桨数值计算验证和加鳍后其安装角对桨效率变化的影响,研究其尾流、压力分布等状况,结果表明,合理的安装角明显提高其推进效率,毂帽鳍对流经螺旋桨的流体有一定的阻滞作用,且具有降低尾流速度以减小毂涡形成和增加推力,同时产生转向相同转矩以提高推进性能,具有工程实用性。The hydrodynamic performance of propeller boss cap fins is studied numerically,in which the viscous flow field is treated by RANS method,the data points of propeller boss cap fins are calculated by a FORTRAN program with specific data format in order to set up geometry in Gambit.The DTMB 4119 propeller is calculated and the results are compared with the tests.The propulsion efficiency with different fix angles of fins are studied,the changes of wakes and pressure distribution are observed.The results show that a reasonable installation angle of fins significantly improve the efficiency of the propulsion,the propeller boss cap fins has a lower wake speed to reduce the hub vortex and increase the thrust,while producing the same torque to improve propulsion performance and with engineering practicality.

关 键 词：RANS法 螺旋桨 毂帽鳍 水动力性能 数值模拟 

分 类 号：U661.3[交通运输工程—船舶及航道工程]