基于数值模拟的圆柱体流固耦合升力谱模型分析

Numerical Research of Lift Spectrum Model for Cylinder Fluid-solid Coupling

基于数值模拟分析，在均匀流的作用下，提出考虑结构动力特性的圆柱体流固耦合升力谱模型，采用威布尔分布模型，以结构的特征长度、约化速度和固有频率作为模型参数，使用Matlab软件进行拟合，对比分析表明该涡激升力的频谱表达式是较准确的。

Based on numerical simulation analysis, a lift spectrum model for cylinder fluid-solid coupling under the impact of uniform flow was proposed. Adopting the Weibull distribution model and the structural characteristic length, reduced velocity and natural frequency as model parameter, the fitting process in Matlab was used. The proposed expression of lift force was proved to be comparatively accurate.