基于CLE方法的有机材料对柔性摆动双翼性能影响研究

基于CLE方法(相容拉格朗日-欧拉方法)研究柔性摆动双翼的具体性能.首先,根据已有的经典翼型实验,建立了翼型结构和周围流体的有限元模型,在结果对比中,证明了采用该方法和模型得到的计算结果比二维无黏理论的计算结果更加接近实验处理结果.在此基础上,研究了有机材料对柔性摆动双翼水动力性能及结构动力响应的影响.与刚性翼型不同,采用合适的有机材料制造翼型结构,既有利于改善柔性摆动双翼的水动力性能,也可以降低其内部应力.

Research on effect of organic material on flexible flapping dual-foils performance based on CLE method

CLE (compatible Lagrangian-Eulerian) method is adopted into flexible flapping dual-foils performance calculation. Firstly, according to experimental conditions, the finite element models of foils and fluid are built based on classical foil experimental results. The numerical simulation method is confirmed more feasible and reliable than 2D-inviscid flows method. Then, the effect of organic material on hydrodynamic performance and structural dynamic response of flexible flapping dual-foils is investigated. Unlike rigid foils, foils made by proper organic material can not only improve hydrodynamic performance, but also decrease structure internal stress of flexible flapping dual-foils.