爆轰波在60光滑弯管中传播的动力响应过程研究

李健; 赵慧; 宁建国

doi:10.11858/gywlxb.2013.05.006

爆轰波在60光滑弯管中传播的动力响应过程研究

doi: 10.11858/gywlxb.2013.05.006

北京理工大学爆炸科学与技术国家重点实验室，北京 100081

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通讯作者:
赵慧 E-mail:zhaohui338@bit.edu.cn

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- 文章访问数: 7267
- HTML全文浏览量: 425
- PDF下载量: 325
出版历程
- 收稿日期: 2012-10-20
- 修回日期: 2012-11-26
- 刊出日期: 2013-10-15

Dynamic Processes of Detonation Waves Propagating through a 60 Smooth Pipe Bend

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 采用显-隐式附加Runge-Kutta方法和5阶精度的加权本质无震荡（WENO）格式以及基元反应模型，对规则爆轰波在60弯管中的传播过程进行了数值模拟研究。基元反应模型采用9组分48反应模型，反应气体为满足化学当量比的H2-O2混合气体，并用氩气稀释。数值模拟结果表明：弯管上壁面的衍射效应使得爆轰压力减小，胞格尺寸增大并伴有局部熄爆；下壁面的反射使得马赫杆后区域压力增大、温度升高，胞格尺寸减小；在弯管段，爆轰胞格的规则性很差，离开弯管大约0.45 m后恢复规则性；由于拐弯角的影响，爆轰波在下壁面存在马赫反射和规则反射两种模式；弯管出口端，反射横波受到爆轰波阵面固有横波的追赶压缩，形成了一道向上运动的爆轰横波。
- 附加Runge-Kutta方法 /
- 反射 /
- 衍射 /
- 弯管 /
- 气相爆轰
Abstract: Implicit-explicit additive Runge-Kutta (ARK) methods and 5-th order weighted essentially non-oscillatory (WENO) schemes are employed to simulate on cellular detonation wave propagating through a smooth pipe bend with a 60 bending angle. A detailed elementary chemical reaction model comprised of 9 species and 48 elementary reactions is implemented with a stoichiometric H2-O2 mixture diluted with argon. The numerical results show that in the bend, diffraction near the inner wall causes the pressure decrease resulting in both the growth of detonation cell size and detonation failure, but near the outer wall detonation reflection diminishes the cell size. A transition length of about 0.45 m long exists before the detonation regains its regularity after leaving the bend. There are two different modes of reflection due to different turning angles. The transverse detonation waves evolve into a detonation owing to continuous compression by other transverse waves running after at the end of the bend.
- additive Runge-Kutta methods /
- reflection /
- diffraction /
- bend /
- gaseous detonation

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参考文献(19)

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文章访问数: 7267
HTML全文浏览量: 425
PDF下载量: 325

爆轰波在60光滑弯管中传播的动力响应过程研究

doi: 10.11858/gywlxb.2013.05.006

通讯作者: 赵慧 E-mail:zhaohui338@bit.edu.cn

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出版历程

Dynamic Processes of Detonation Waves Propagating through a 60 Smooth Pipe Bend

计量

出版历程

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通讯作者:
赵慧 E-mail:zhaohui338@bit.edu.cn