空气动力学学报2018，Vol.36Issue(1)：156-162,7.DOI:10.7638/kqdlxxb-2017.0147
低雷诺数下展弦比对仿生拍动翼推进性能的影响研究
Investigation on the influence of aspect ratio on the thrust performance of bionic motion wing under low Reynolds number
摘要
Abstract
For the development of new concepts of advanced high performance aircraft and undersea vehicles,it is great significant to investigate the unsteady movement of creatures in nature.Based on the immersed boundary method(IB) and lattice Boltzmann method (LBM),an large-scale 3D IB-LBM parallel solver was developed.In order to investigate the influence of aspect ratio on the thrust performance of bionic motion wing under low Reynolds number,the numerical simulation of the NACA0012 bionic flapping wings with four different aspect ration were carried out in Guangzhou Chinese Tianhe 2 supercomputer.The detail of the vortex structure and evolution procedure were captured,and the unsteady force of NACA0012 wing were given.The numerical results show that the two-dimensional effect of the vortex structure of the wing becomes more apparent as the increases of the aspect ratio.However,the trust lift is increased first and then decreased with the increase of the the aspect ratio.It indicates that for the bionic vehicle design the aspect ration of the bionic motion wing must be selected and evaluated carefully.关键词
NACA0012仿生翼/浸入边界法/格子玻尔兹曼方法/涡系结构/推力系数Key words
NACA0012 wing/immersed boundary method/Lattice Boltzmann method/vortex structure/thrust coefficient分类
航空航天引用本文复制引用
苑宗敬,韩佳坤,陈刚..低雷诺数下展弦比对仿生拍动翼推进性能的影响研究[J].空气动力学学报,2018,36(1):156-162,7.基金项目
国家自然科学基金(11672225,11272005) （11672225,11272005）
国家自然基金委-广东省联合基金超算专项支持项目(11511130053) （11511130053）
陕西省自然科学基金(2016JM1007) （2016JM1007）
