喷水推进器进水流道格栅流固耦合特性研究
Analysis of the fluid-structure coupling characteristics of a water jet's inlet grille
孙聪 1尹晓辉 2王建强 2王超 1王子佳 1郝磊1
作者信息
- 1. 哈尔滨工程大学船舶工程学院,黑龙江哈尔滨 150001
- 2. 中国船舶及海洋工程设计研究院喷水推进技术重点实验室,上海 200011
- 折叠
摘要
为了研究格栅部件对喷水推进船舶效率的影响,本文拟采用流固耦合的数值计算方法系统地对格栅表面受力及其强度特性进行计算,结合有限元方法和流固耦合理论,以STARCCM+和ABAQUS软件为工具,根据目前已知的格栅剖面设计方法,对目前格栅的剖面形式进行改进,形成新型对称剖面形式的格栅.基于上述计算流体力学与流固耦合计算方法对其进行周围流场、结构静力强度、结构动力强度进行计算与分析.结果表明:对称形式的格栅剖面对于降低格栅的变形与应力水平有一定的帮助,采用新型对称形式的剖面结构使格栅总体变形模式发生了变化,但是最大变形位置与最大应力出现在格栅的位置未发生明显变化,新型对称剖面形式格栅具有比较好的静强度与动强度特性,各栅条均匀承受流体载荷.
Abstract
To study the effect of grille components on the efficiency of waterjet propulsion ships,we use the numeri-cal calculation method of fluid-structure interaction to systematically calculate the force and strength characteristics of the grid surface.Combined with the finite element(FEM)method and fluid-structure interaction theory and based on the STARCCM+and ABAQUS software—using the currently known design method of the grid section—the existing section form of the grid is improved,forming a new type of grid with a symmetrical section.Based on the abovementioned computational fluid dynamics and fluid-structure coupling calculation methods,the surrounding flow field,structural static strength,and structural dynamic strength are calculated and analyzed.Results show that the symmetrical grid section helps reduce the deformation and stress level of the grid.The new symmetrical profile structure has changed the overall deformation mode of the grid,but the maximum deformation position and maxi-mum stress have not obviously changed.The new grid with a symmetrical section has better static strength and dy-namic strength characteristics,and each grid bar bears the fluid load evenly.
关键词
喷水推进器/格栅/分离涡模拟/流固耦合/强度分析/脉动压力/计算流体力学Key words
water jet/grid/separated eddy simulation/fluid-structure interaction/strength analysis/pulsating pressure/computational fluid dynamics引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据