| 环形爆震波聚焦起爆数值模拟 |
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| 引用本文： | 秦亚欣,高歌.环形爆震波聚焦起爆数值模拟[J].航空动力学报,2011,26(5):1037-1042. |
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| 作者姓名： | 秦亚欣 高歌 |
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| 作者单位： | 北京航空航天大学,能源与动力工程学院,航空发动机气动热力国家级重点实验室,北京,100191 |
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| 摘 要： | 对三种带不同结构形式的环形预爆管的爆震发生器进行了数值模拟,来研究环形爆震波聚焦起爆现象及其气动特性.数值计算采用多组分理想气体详细的化学反应机理、二维轴对称非定常流动的NavierStokes方程来模拟化学动力学和流体动力学过程.研究发现用低的点火能量对环形预爆管中的燃料和氧化剂点火产生层流火焰,层流火焰在狭窄管壁的...
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| 关 键 词： | 爆震 环形预爆管 激波反射 激波聚焦 数值模拟 |
| 收稿时间： | 2010/4/23 0:00:00 |
| 修稿时间： | 2010/10/31 0:00:00 |
Numerical simulation of detonation initiation in a duct via imploding annular detonation |
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| QIN Ya-xin and GAO Ge.Numerical simulation of detonation initiation in a duct via imploding annular detonation[J].Journal of Aerospace Power,2011,26(5):1037-1042. |
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| Authors: | QIN Ya-xin and GAO Ge |
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| Institution: | QIN Ya-xin,GAO Ge(National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics,School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing 100191,China) |
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| Abstract: | Computational simulations on detonation duct with different annular pre-detonators were carried out to study the phenomena,mechanism and gas dynamics characteristic of annular detonation initiation.Two-dimensional axisymmetric and unsteady Navier-Stokes equations were numerically simulated,and detailed chemical reaction kinetics of hydrogen/air mixture was used.The results of numerical simulation show that laminar flame generated by low energy ignition in annular pre-detonator accelerates under the narrow c... |
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| Keywords: | detonation annular pre-detonator shock wave reflection shock wave imploding numerical simulation |
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