摘要
为了研究不同外形和安装位置的压浪板对高速三体船阻力的影响,选取了展长B、弦长L、安装角度θ、主体安装高度H及侧体安装高度h等5个代表性参数,通过正交试验设计出16种参数组合,采用基于雷诺时均方法的SST k-ω湍流模型对加装不同压浪板的三体船静水航行过程进行数值模拟并验证模拟的准确性,极差分析得出5个参数对总阻力系数的影响顺序为H>h>B>L>θ。对较优参数组合压浪板进行多航速模拟,并监测静水阻力、纵倾、艉下沉、自由液面及船底压力等数据,分析压浪板减阻和改变航行姿态的原因,发现减阻效果随着航速的增大而逐渐明显,傅汝德数Fr为0.598时减阻率可达12.69%。
In order to analyze the influence of different shapes and mounting positions of stern flaps on the drag of high-speed trimaran,five representative parameters are selected:span(B),chord length(L),mounting angle(θ),main mounting height(H)and side body mounting height(h).Through orthogonal test,16 parameter combinations are designed,and SST k-ω(shear stress transfer model)turbulence model based on Reynolds time mean method is used to simulate the static water sailing process of trimaran equipped with different stern flaps,and the accuracy of the simulation is verified.The range analysis shows that the influence order of the five parameters on the total drag coefficient is H>h>B>L>θ.For the multi speed simulation of stern flap with better parameter combination and the monitoring of data such as hydrostatic resistance,trim,stern sinking,free surface and bottom pressure,the causes of stern flap drag reduction and change of navigation attitude are analyzed.It is found that the drag reduction effect is gradually obvious with the increase of ship speed,and the drag reduction rate can reach 12.69%when Fr is 0.598.
作者
张恒浩
刘辉
陈明
周波
ZHANG Henghao;LIU Hui;CHEN Ming;ZHOU Bo(School of Naval Architecture and Ocean Engineering,Dalian University of Technology,Dalian116024,Liaoning,China)
出处
《船舶工程》
CSCD
北大核心
2023年第10期43-48,共6页
Ship Engineering
基金
大连市科技攻关计划项目(HX20210506)
关键词
高速三体船
阻力性能
压浪板
参数敏感性分析
high-speed trimaran
resistance performance
stern flap
parameters sensitivity analysis
