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抬举湍流H2/N2射流火焰的PDF模拟
引用本文:王海峰,陈义良.抬举湍流H2/N2射流火焰的PDF模拟[J].计算物理,2006,23(1):73-79.
作者姓名:王海峰  陈义良
作者单位:中国科学技术大学,热科学和能源工程系,安徽,合肥,230027
摘    要:采用数值方法研究了一个高温燃烧产物环境中的抬举湍流H2/N2射流火焰,对火焰的自然和抬举特性进行了研究.采用标量联合概率密度函数(PDF)方法处理详细的化学动力学过程,而湍流流场采用一个多时间尺度(MTS)k-ε湍流模型计算.计算中结合了一套描述氢气氧化的详细化学反应动力学机理.计算结果和实验数据进行了对比,表明所采用的模型可以精确的模拟火焰抬举高度和自然的过程.

关 键 词:火焰抬举  自燃  κ-ε模型  详细化学动力学  数值方法  MTS  κ-ε  model
文章编号:1001-246X(2006)01-0073-07
收稿时间:2004-07-16
修稿时间:2004-10-12

A PDF Simulation of the Lifted Turbulent H2/N2 Jet Flame
WANG Hai-feng,CHEN Yi-liang.A PDF Simulation of the Lifted Turbulent H2/N2 Jet Flame[J].Chinese Journal of Computational Physics,2006,23(1):73-79.
Authors:WANG Hai-feng  CHEN Yi-liang
Abstract:A lifted turbulent H2/N2 jet flame in a hot and vitiated coflow is investigated numerically to explore the issues of autoignition as well as the flame lift-off. The composition probability density function (PDF) method is employed to facilitate the implementation of detailed chemical kinetics. A multiple-time-scale κ-ε turbulence model is combined for the calculation of flow and turbulence fields. Detailed chemical reaction mechanisms of hydrogen oxidation are incorporated in the calculation. The predictions are compared with experimental data. The flame lift-off height and auto-ignition process are reproduced accurately by the model.
Keywords:PDF  flame lift-off  auto-ignition  PDF  detailed chemical kinetics  numerical method
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