南华大学学报（自然科学版）2015，Vol.29Issue(4)：92-97,103,7.
轴向流中两平行弹性薄板大挠度流固耦合系统的数值模拟
Fluid-Structure Interaction Simulation of Two Parallel Elastic Plates with Large Deformation Subjected to Axial Flow
摘要
Abstract
The dynamic behavior and flow field characteristics of two parallel elastic plates with large deformation subjected to axial flow are studied numerically. The structural dy-namics equation is discretized by isoparametric displacement-based finite elements,and the motion of a continuous fluid domain is governed by two-dimensional incompressible viscous Navier-Stokes equations,which is discretized by finite volume method. The two-dimensional numerical model of two-way fluid-structure coupling is established combined with moving mesh technology,realizing the interaction of elastic plates and axial fluid. The flow-induced vibration of a single plate is studied using the numerical model. Three different limit-cycle oscillations modes are found with the different distance between the two plates:in-phase os-cillation,out-of-phase oscillation,and indefinite oscillation. The plate boundary layer shed from its free end and the wake are obtained under the in-phase and out-of-phase modes respectively. In addition,it is found that the two plates show beating effect in the transition from in-phase mode to out-of-phase mode.关键词
流固耦合/平行弹性薄板/大挠度/振动响应/流场特性Key words
fluid-structure coupling/parallel elastic plates/large deformation/dynamic behavior/flow field characteristics分类
通用工业技术引用本文复制引用
洪伟斌,郭长青,盛叶舟,贺楼..轴向流中两平行弹性薄板大挠度流固耦合系统的数值模拟[J].南华大学学报（自然科学版）,2015,29(4):92-97,103,7.基金项目
国家自然科学基金资助项目(51479098) （51479098）
