| 火焰加速和爆燃向爆震转变过程的数值模拟及试验验证 |
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| 引用本文： | 秦亚欣,高歌.火焰加速和爆燃向爆震转变过程的数值模拟及试验验证[J].航空动力学报,2011,26(7):1488-1494. |
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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： | 为了研究火焰加速现象、爆燃向爆震转变和不稳定爆震向稳定爆震的转变过程,对带环形孔板的爆震室进行了数值模拟.研究发现用较低的点火能量对爆震室中的燃料和氧化剂点火产生层流火焰,在孔板的阻碍作用和火焰诱导激波以及反射波的加速作用下,经过几个孔板的阻碍加强作用,在火焰和强激波之间的未燃物中形成爆炸中心,最终引爆未燃混气.同时对...
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| 关 键 词： | 火焰加速 爆燃向爆震转变 爆震波 障碍物 数值模拟 |
| 收稿时间： | 6/30/2010 4:23:13 PM |
| 修稿时间： | 2010/12/8 0:00:00 |
Numerical simulation and experimental study on flame acceleration and deflagration to detonation transition |
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| QIN Ya-xin and GAO Ge.Numerical simulation and experimental study on flame acceleration and deflagration to detonation transition[J].Journal of Aerospace Power,2011,26(7):1488-1494. |
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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: | Numerical simulations and experimental study in a detonation duct with orifice plates were carried out to study the phenomena of flame acceleration and the evolutions of deflagration to detonation transition(DDT) and unstable detonation to stable detonation.The results of numerical simulation show that laminar flame is generated by low energy ignition in detonation duct.The laminar flame becomes turbulent flame in the obstruction of orifice plate and under the acceleration action of shock waves and reflecte... |
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| Keywords: | flame acceleration deflagration to detonation transition detonation obstacles numerical simulation |
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