国防科技大学学报2017，Vol.39Issue(3)：58-63,6.DOI:10.11887/j.cn.201703010
无限质量降落伞充气动力学数值模拟
Numerical simulation on parachute's infinite mass inflation dynamics
摘要
Abstract
To analyze the supersonic opening performance of the parachute in Mars reentry environment,the coupling dynamic models between compressible fluid and flexible structure of parachute were solved on the basis of the arbitrary Euler-Lagrange penalty function method and the multimaterial arbitrary Lagrange Euler algorithm.The evolution of 3D shape of DGB (disk gap band) parachute during supersonic inflation was simulated,and the structural dynamic behaviors of canopy fabric were predicted.The drag area and coefficients were compared with the wind tunnel data,and the inflation performance of parachute and the influence of fore-body were analyzed.Finally,the wake of unsteady fluid and distribution of shock wave around supersonic parachute were investigated.The results show that:the DGB parachute is well inflated without serious collapse;as the increase of Mach numbers,the drag coefficients gradually decrease,along with the increase of the inflation time,which brings into correspondence with the test results,and proves the validity of the proposed method.关键词
降落伞/超声速流动/无限质量充气/流固耦合/可压缩流Key words
parachute/supersonic flow/infinite mass inflation/fluid structure interaction/compressible fluid分类
航空航天引用本文复制引用
高兴龙,张青斌,高庆玉,唐乾刚..无限质量降落伞充气动力学数值模拟[J].国防科技大学学报,2017,39(3):58-63,6.基金项目
国家自然科学基金资助项目(11272345,51375486) （11272345,51375486）
国防科技大学基金资助项目(JC13-01-04) （JC13-01-04）
