摘要
为了研究局部气垫双体船柔性气封在波浪中的变形特性,本文基于流固耦合方法,采用计算流体力学对局部气垫双体船的艏艉气封形式进行了相应处理。在此基础上,分别研究了航速为3.6和5.0 m/s时,波长为5和7 m时艏艉气封在波浪中的变形和受力特性。结果表明:基于流固耦合方法对柔性气封进行处理时,需要通过各个裙指的非粘连来解决大变形带来的网格畸变;在给定杨氏模量为10 MPa下,艏艉柔性气封的变形是微幅的且近似呈现线性规律,变形的均值范围最大不超过0.5 mm;艉气封所受到的压力值均大于艏气封处的压力值,但总的压力值不大于19.0 kPa,这种规律在高速3.6 m/s时更为明显,也与艏艉气封的变形特性相吻合。
Computational fluid dynamics are used to address the air seals of partial air cushion-supported catamaran(PACSCAT)based on the fluid-structure interaction(FSI)to study the deformation characteristics of the flexible air seal of a PACSCAT in waves.The deformation and stress characteristics of the bow and stern air seals in waves are studied,respectively,at speeds of 3.6 and 5.0 m/s and wavelengths of 5 and 7 m.The results show that when the flexible seals are processed using the FSI method,the mesh distortion caused by a large deformation must be solved using the nonadhesion of each skirt finger.Furthermore,under a given Young′s modulus of 10 MPa,the deformation of the bow and stern flexible seal is small and can be approximated to a linear law,and the average range of the deformation does not exceed 0.5 mm.Additionally,the pressure value of the stern seal is greater than that of the bow seal,while the total pressure value is not more than 19.0 kPa.This law becomes more obvious at a high speed of 3.6 m/s and is also consistent with the deformation characteristics of the bow and stern gas seals.
作者
杨静雷
孙寒冰
李晓文
廖卫强
YANG Jinglei;SUN Hanbing;LI Xiaowen;LIAO Weiqiang(Marine Engineering College,JiMei University,Xiamen 361000,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2023年第6期977-985,共9页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51909103)
厦门市自然科学基金(3502Z20227210)
福建省教育厅资助项目(JAT210227)。
关键词
局部气垫双体船
波浪作用
柔性气封
流固耦合
变形特性
受力特性
线性规律
压力值
partial air cushion support catamaran
wave action
flexible seal
fluid-structure interaction
deformation characteristics
mechanical characteristics
linear law
pressure value
