循环水槽动力段壁面振动的影响因素分析  

Analysis of influencing factors on the wall vibration of the power section of a circulating water tunnel

作　　者：陈崇格 宁小深 李福庚 马嘉辰 李旭晟 胡健[1] CHEN Chongge;NING Xiaoshen;LI Fugeng;MA Jiachen;LI Xusheng;HU Jian(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,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2023年第5期743-749,共7页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(52071105,51679045,51579052);中央高校基本科研业务费项目(3072020CFT0103);装备预研基金项目(6141B42862,61402100201,61402070304,6142204180408,6142407180108)。

摘　　要：在已知循环水槽动力段壁面振动主要是径向振动的情况下,为了研究影响其振动规律的影响因素,本文建立了叶轮旋转状态时的循环水槽动力段流场与壁面相互作用的数值计算模型。用滑移网格实现叶轮的旋转运动,并分别用剪切应传输(shear-stress transport,SST)模型和有限固体模型进行流场区域叶轮水动力和固体区域应力的计算,同时考虑流体区域和固体区域的变形,分别求解流体和固体控制方程,通过流体-固体交界面传递计算数据实现双向流固耦合计算。结果表明:增加叶轮叶数可以显著地降低壁面的振动,且壁面区域的固有频率对振动的影响很小,叶频对对壁面振动大小起决定性作用。Considering that the wall vibration of the power section of circulating water tunnels is mainly radial vibration,a numerical model of the interaction between the flow field and the wall of the power section of the circulating water tunnel when the vane wheel is rotating was established to study the influencing factors that affect its vibration law.A slip grid was applied to realize the rotating motion of the vane wheel.The detached eddy simulation with the shear-stress transport k-ωmodel and the finite solid model were used to solve the hydrodynamic force of the vane wheel in the flow field area and the stress in the solid area,respectively.At the same time,in consideration of the deformation of the fluid and solid regions,the fluid and the solid governing equation were solved,and data were transferred through the fluid-solid interface to realize two-way fluid-solid coupling simulation.Results showed that increasing the number of blades can significantly reduce wall vibration,the natural frequency of the wall region has little effect on vibration,and blade frequency plays a decisive role in wall vibration.

关 键 词：循环水槽 叶轮 壁面振动 分离涡 有限固体模型 双向流固耦合 固有频率 叶频 

分 类 号：U661.1[交通运输工程—船舶及航道工程]