【摘要】 基于CFD方法从扑翼设计的角度出发对扑翼的外形进行深入的研究。使用基于广义无限插值理论的代数网格生成方法开发适合扑翼运动的三维结构N-S动网格,并应用有限体积法结合双时间推进技术求解预处理后的低速三维非定常N-S方程,完成了对低速扑翼绕流的数值模拟。通过与文献算例的比较验证了本文方法的可靠性和正确性。在此基础上,对文献[8]中介绍的一种混合翼型的相关参数变化对扑翼气动特性的影响开展了深入的研究。更多还原

【Abstract】 The airfoil design of a flapping wing is lucubrated from the perspective of airfoil design based on Computational Fluid Dynamics(CFD).A 3-D structured grid adapting for simulation of viscous flow over flapping wing based on the transfinite interpolation is developed,and the preconditioned 3-D compressible unsteady Navier-Stokes equations are employed by finite volume method and dual-time stepping method.As the computational results are in better agreement with the references data[7],the method given in this paper is correct and reliable.On this basis,the influences of the correlative parameters of a mixed foil introduced by the reference[8] which effect on the aerodynamic characteristics of the flapping wing are analyzed.更多还原