Numerical simulation of detonation failure and re-initiation in bifurcated tubes
Numerical simulation of detonation failure and re-initiation in bifurcated tubes
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DOI：
10.1016/j.ijhydene.2016.08.174
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发表时间：
2017-03
影响因子：
7.2
通讯作者：
A. Heidari;J. Wen
中科院分区：
文献类型：
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作者：
A. Heidari;J. Wen
建立了一种数值模拟氢气-空气混合气中爆轰波传播、衰减、失效和再起爆的方法。目的是研究爆炸可能失败或重新启动的条件下，在分叉管，这是重要的工业事故的风险评估。编制了求解可压缩、多维、瞬态、反应性Navier-Stokes方程的程序。采用隐式大涡模拟方法模拟湍流。该代码的开发和测试，以确保爆燃（爆炸失败时）和爆炸模拟正确。该程序能正确预测火焰特性和爆轰动力学参数。分叉管中爆轰传播的预测验证了Wang等人的实验工作。[1，2]并发现与实验观察结果吻合良好。
A numerical approach is developed to simulate detonation propagation, attenuation, failure and re-initiation in hydrogen–air mixture. The aim is to study the condition under which detonations may fail or re-initiate in bifurcated tubes which is important for risk assessment in industrial accidents. A code is developed to solve compressible, multidimensional, transient, reactive Navier–Stokes equations. An Implicit Large Eddy Simulation approach is used to model the turbulence. The code is developed and tested to ensure both deflagrations (when detonation fails) and detonations are simulated correctly. The code can correctly predict the flame properties as well as detonation dynamic parameters. The detonation propagation predictions in bifurcated tubes are validated against the experimental work of Wang et al. [1,2] and found to be in good agreement with experimental observations.