空气动力学学报Issue(4)：446-452,7.DOI:10.7638/kqdlxxb-2012.0148
基于 CFD 方法的对拍扑翼推进特性分析
Analysis of propulsive performance for dual flapping airfoils using CFD method
摘要
Abstract
Dual flapping airfoils propulsion has many advantages than a single flapping airfoil,such as higher propulsive efficiency,easier mechanical design,more stationary lift and inertial force.The unsteady flow fields around flapping airfoils are simulated by solving Reynolds Averaged Navier-Stokes equations based on dynamically deformable hybrid grids.Some flapping parameters,such as plunging amplitude, plunging reduced frequency,spacing between the dual airfoils,phase difference between plunge and pitch of composite motion on thrust force coefficient,and propulsive efficiency,are studied by simulating the un-steady low speeds flow over dual flapping NACA0012 airfoils.It is found that dual flapping airfoils achieve a higher thrust force coefient and propulsive efficiency compared with a single flapping airfoil.It is also shown that there is an optimum phase angle of composite motion for a given flapping motion mode.The thrust force coefficient and propulsive efficiency of the composite motion are higher than those of the pure plunging mo-tion.关键词
扑翼推进/双翼对拍/数值模拟/非定常流场Key words
flapping airfoil propulsion/dual flapping airfoil/numerical simulation/unsteady flow field分类
航空航天引用本文复制引用
张伟伟,徐杨,蒋跃文,叶正寅..基于 CFD 方法的对拍扑翼推进特性分析[J].空气动力学学报,2014,(4):446-452,7.基金项目
航空基金（20121353014）；西北工业大学基础研究基金 （）
