| 脉冲爆轰发动机第一和第二次循环的数值模拟 |
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| 引用本文： | 于陆军,范宝春,归明月,董刚.脉冲爆轰发动机第一和第二次循环的数值模拟[J].空气动力学学报,2009,27(4). |
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| 作者姓名： | 于陆军 范宝春 归明月 董刚 |
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| 作者单位： | 南京理工大学瞬态物理实验室,江苏,南京,210094 |
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| 基金项目： | 国家自然科学基金项目，北京理工大学爆炸科学与技术重点实验室开放基金 |
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| 摘 要： | 对脉冲爆轰发动机两次循环工作过程进行轴对称数值模拟,考虑了包含19个基元反应和9种组份的H2-O2-N2详细化学反应动力学机理,通过改进的ISAT方法(动态自适应建表)减少反应化学的计算时间.数值结果显示了脉冲爆轰发动机充气,起爆,卸压和再充气的循环工作过程.根据数值计算结果,详细地讨论了两次循环管内、外流场的结构间的差异.两次循环中管内、外流场结构的差异又导致二者推力和冲量的不同.
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| 关 键 词： | 爆炸力学 多循环脉冲爆轰发动机 动态自适应建表 悬挂激波 |
Numerical simulation of 1~(st) and 2~(nd) cycles of pulse detonation engine |
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| YU Lu-jun,FAN Bao-chun,GUI Ming-yue,Dong Gang.Numerical simulation of 1~(st) and 2~(nd) cycles of pulse detonation engine[J].Acta Aerodynamica Sinica,2009,27(4). |
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| Authors: | YU Lu-jun FAN Bao-chun GUI Ming-yue Dong Gang |
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| Institution: | Laboratory of Transient Physics;Nanjing University of Science and Technology;Nanjing Jiangsu 210094;China |
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| Abstract: | By solving axisymmetric Navier-Stokes equations in conjunction with the chemistry,numerical simulation of two cycle of pulse detonation engine was performed,and a detailed chemical mechanism of H2-O2-N2 system,which included 19 element reactions and 9 species,was involved.An in situ adaptive tabulation(ISAT) method was improved to enhance the computational performance of combustion chemistry.The calculated results showed the process of fueling,initiation,blowing down and refueling.Based on the numerical res... |
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| Keywords: | mechanics of explosion multi-cycle PDE in situ adaptive tabulation suspended shock |
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