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个人信息Personal Information
教授
招生学科专业：
力学 -- 【招收硕士研究生】 -- 航空学院
航空宇航科学与技术 -- 【招收博士、硕士研究生】 -- 航空学院
机械 -- 【招收博士、硕士研究生】 -- 航空学院
主要任职：“飞行器环境控制与生命保障”重点实验室副主任
其他任职：南京市妇联执委、秦淮区政协常委
毕业院校：南京航空航天大学
学历：南京航空航天大学
学位：工学博士学位
所在单位：航空学院
办公地点：南京航空航天大学明故宫校区C12-502
联系方式：84893739（Tel） yuli_happy@163.com
电子邮箱：
Numerical Simulation of the Supersonic Disk-Gap-Band Parachute by Using Implicit Coupling Method
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所属单位：航空学院
发表刊物：INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION
关键字：supersonic parachute fluid-structure interaction membrane structure compressible flow breathing phenomenon shock wave oscillation
摘要：The implicit coupling method is applied to model the 0.8m disk-band-gap parachute at Mach 2.0. The fluid and structure governing equations are solved by the Lower-Upper Symmetric Gauss-Seidel (LU-SGS) algorithm and Newmark scheme, respectively. By exchanging the numerical results of the coupling surface with Gauss-Seidel algorithm, high accuracy solutions at every physical time step are obtained. The numerical results of the canopy drag coefficient and projected area fit well with the wind tunnel test results. The simulation reproduces the shock oscillation and breathing phenomenon of the canopy that are usually observed in these systems at Mach 2.0. Furthermore, it is found that the unstable saddle point is the main reason for the shock oscillation of the canopy. And the unsynchronized phases of the canopy area and shock oscillation curves lead to the drag of the canopy oscillate in irregular state.
ISSN号：1565-1339
是否译文：否
发表时间：2017-08-01
合写作者：杨雪,杨雪,Shen, Cheng,Zhao, Xiao Shun
通讯作者：余莉