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论文:2013,Vol:31,Issue(5):737-741 |
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引用本文： |
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陈星谷, 王治武, 郑龙席, 彭畅新, 胡明. 预爆管布置方式对起爆特性影响的数值模拟研究[J]. 西北工业大学 |
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Chen Xinggu, Wang Zhiwu, Zheng Longxi, Peng Changxin, Hu Ming. Numerical Research of Effect of Pre-Detonator Installment Mode on Detonation Initiation Characteristics[J]. Northwestern polytechnical university |
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| 预爆管布置方式对起爆特性影响的数值模拟研究 |
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| 陈星谷, 王治武, 郑龙席, 彭畅新, 胡明 |
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| 西北工业大学 动力与能源学院, 陕西 西安 710072 |
| 摘要: |
| 为了获得一种以较短的距离和时间在主爆震管中起爆爆震波的预爆管布置方式,采用商用CFD软件对五种预爆管布置方式下的爆震射流在主爆震管中起爆爆震波的过程进行了二维数值模拟。结果表明,现有几何模型中爆震射流在主爆震管中不能直接起爆爆震波,需要通过射流与壁面的作用来二次起爆;预爆管对称正交布置在主爆震管两侧时起爆距离和时间最短,预爆管水平反向布置方式次之,而预爆管水平正向布置时没有起爆。 |
| 关键词:
脉冲爆震发动机
起爆
预爆管
爆震传播
数值研究
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| Numerical Research of Effect of Pre-Detonator Installment Mode on Detonation Initiation Characteristics |
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| Chen Xinggu, Wang Zhiwu, Zheng Longxi, Peng Changxin, Hu Ming |
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| Department of Aero-Engines, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| In order to obtain the installment mode of the pre-detonator which is conducive to initiate detonation wave in the main detonation tube,two-dimensional numerical simulation of the detonation initiation process with pre-detonator was carried out with CFD software. And five installment modes of the pre-detonator were simulated.Stoichiometric propane-air mixture was used as the fuel-oxidant of the pre-detonator and main detonation tube. The simulation results and their analysis indicated preliminarily that:(1) the detonation jet cannot initiate the propaneair mixture directly in the main detonation tube for the current physical models,but can initiate the main detonation tube through DDT strengthened by the jet collision with the tube wall;(2) when the pre-detonators were installed on both sides of the main detonation tube for the symmetric and orthogonal installment mode,the initiation distance and time were the shortest,followed by the parallel and reverse arrangement of pre-detonator; however,the parallel and forward arrangement of pre-detonator cannot initiate the propane-air mixture in the main detonation tube. |
| Key words:
computational fluid dynamics
computer simulation
computer software
detonation
fuels
Navier stokes equations
numerical methods
oxidants
pressure
pressure distribution
pulse detonation engines
turbulence models
two dimensional
velocity
detonation initiation
detonation transmission
pre-detonator
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| 收稿日期: 2012-12-02
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(51306153);陕西省自然科学基金(2010JQ7005);高等学校博士学科点专项科研基金新教师类资助课题(20116102120027);西北工业大学基础研究基金(JCY20130129)资助 |
| 通讯作者:
Email： |
| 作者简介: 陈星谷(1986-),西北工业大学硕士研究生,主要从事燃烧学、流体力学和新概念发动机应用基础研究。
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参考文献: |
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[1] 严传俊, 范 玮.脉冲爆震发动机原理及关键技术.西安: 西北工业大学出版社, 2005 Yan Chuanjun, Fan Wei.Principle and Key Technology of Pulse Detonation Engine.Xi'an: Northwestern Polytechnical University Press, 2005 (in Chinese)
[2] Wang Zhiwu, Yan Chuanjun, Zheng Longxi, Fan Wei.Experimental Study of Ignition and Detonation Initiation in Two-Phase Valveless Pulse Detonation Engines.Combustion Science and Technology, 2009, 181 (10): 1310-1325
[3] Wang Zhiwu, Yan Chuanjun, Fan Wei, Zheng Longxi.Experimental Study of Atomization Effects on Two-Phase Pulse Detonation Engines.Proc.IMechE Part G: J Aerospace Engineering, 2009, 223(G6): 721-728
[4] Kailasanath K.Recent Developments in the Research on Pulse Detonation Engines.AIAA Journal, 2003, 41 (2): 145-159
[5] Brophy C M, Werner L T S, Sinibaldi J O.Performance Characterization of a Valveless Pulse Detonation Engine.AIAA-2003-1344
[6] Chiping Li, Kailasanathk.Detonation Initiation by Annular-Jet-Induced Imploding Shocks.Journal of Propulsion and Power,2005, 21 (1): 183-186
[7] 王治武, 陈星谷, 郑龙席等.横向射流起爆爆震波数值研究.推进技术, 2013, 34(3): 422-427 Wang Zhiwu, Chen Xinggu, Zheng Longxi, et al.Numerical Research of the Transverse Jet Effect on Detonation Initiation Characteristics.Journal of Propulsion and Power, 2013, 34(3): 422-427 (in Chinese) |
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1．王治武, 陈星谷, 郑龙席, 彭畅新, 卢杰.不同类型射流起爆爆震波特性的数值研究[J]. 西北工业大学, 2014,32(4): 618-623 |
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