海南大学学报（自然科学版）2025，Vol.43Issue(2)：169-179,11.DOI:10.15886/j.cnki.hdxbzkb.2024030601
运动相位对薄平板断面气动自激力影响的数值模拟
Numerical simulation of the effects of motion phase angle on the aerodynamic self-excited forces of a thin plate section
摘要
Abstract
In order to investigate the effects of motion phase angle on the aerodynamic self-excited forces,in the report,the computational fluid dynamics simulation was performed,the motion amplitudes and phase angles were changed,the nonlinear aerodynamic self-excited force properties of a thin plate section were investigated.The results indicated that in the cases of small motion amplitudes,the self-excited aerodynamic loads were irrelevant to motion phase angles,which is in agreement with the classic aerodynamic theory of streamlined sections.With the increase of the amplitude,the nonlinear properties of the self-excited forces displayed in two aspects.First,the new high-order load components arose,however,when the motion amplitude remained stable,the motion phase angle changes did not bring the new higher order component of self-excitation force;the change of the phase angle resulted in the change of the self-excited force components,and which affected the proportion of each order component of self-excitation force significantly.In the cases of small motion amplitudes,the effects of motion phase angle on the flutter derivatives were negligible.With the increase of the amplitude,the flutter derivatives A*1,A*2,A*4,and H*4 become sensitive to phase angles,while A*3,H*1,H*2,and H*3 remain insensitive.These properties suggested that because of the dependence of the self-excited aerodynamic loads on the motion phase angle,for the streamlined section experiencing large motion states,the traditional flutter derivative aerodynamic description become invalid.关键词
薄平板/运动相位/弯扭耦合/自激力/颤振导数Key words
thin plate/motion phrase angle/bending-torsional coupling/self-excited load/flutter derivatives分类
交通工程引用本文复制引用
林仁洋,张志田,曾加东,聂远青..运动相位对薄平板断面气动自激力影响的数值模拟[J].海南大学学报（自然科学版）,2025,43(2):169-179,11.基金项目
国家自然科学基金重点项目(51938012) （51938012）
国家自然科学基金地区科学基金项目(52268073,52068020) （52268073,52068020）
