钝体驻定湍流扩散火焰的数值研究——燃烧模型比较

计算物理 ›› 2010, Vol. 27 ›› Issue (2): 229-239.

钝体驻定湍流扩散火焰的数值研究——燃烧模型比较

黄庆¹, 朱旻明², 叶桃红², 陈义良², 董刚³

1. 中南大学能源科学与工程学院, 湖南长沙 410083;
2. 中国科学技术大学热科学和能源工程系, 安微合肥 230027;
3. 南京理工大学瞬态物理重点实验室, 江苏南京 210094

收稿日期:2008-10-06 修回日期:2009-02-23 出版日期:2010-03-25 发布日期:2010-03-25
作者简介:黄庆(1975-),男,湖南邵阳,博士,从事计算流体力学和湍流燃烧的研究.
基金资助:
国家自然科学基金(50506028)资助项目

Numerical Simulation of Bluff-body Stabilized Turbulent Non-premixed Flame:A Comparison of Combustion Models

HUANG Qing¹, ZHU Minming², YE Taohong², CHEN Yiliang², DONG Gang³

1. School of Energy Science and Engineering, Central South University, Changsha 410083, China;
2. Thermal Science and Energy Engineering Department, University of Science and Technology of China, Hefei 230027, China;
3. State Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China

Received:2008-10-06 Revised:2009-02-23 Online:2010-03-25 Published:2010-03-25

摘要/Abstract

摘要： 分别采用标量联合的概率密度函数方法、稳态火焰面模型、Euler非稳态火焰面模型和基于有限体积/Monte Carlo混合算法的完备PDF模型对钝体驻定的Sydney湍流扩散火焰HM1进行数值模拟,以比较不同燃烧模型的性能,并比较标量联合的概率密度函数方法和Euler非稳态火焰面模型对氮氧化物排放预测的差异.计算结果和实验数据的比较表明,采用概率密度函数方法计算化学反应可以得到更好的结果但计算量较大,而用火焰面模型求解计算量较小,在接近完全燃烧的情形下,其计算结果比较合理.

关键词: 概率密度函数方法, 钝体驻定扩散火焰, 氮氧化物, 火焰面模型

Abstract: A joint-scalar probability density function (PDF) method, a steady laminar flamelet model, a Eulerian unsteady laminar flamelet model and a hybrid RANS and PDF method are employed in calculating a bluff-body stabilized turbulent non-premixed Sydney flame HM1. Nitrogen oxides emission is numerically simulated with the joint-scalar PDF method and the Eulerian unsteady laminar flamelet model in order to investigate influence of combustion models on the formation of nitrogen oxides. Comparisons between numerical results and experimental data show that chemical reactions by PDF are best while the computational cost is expensive. The laminar flamelet model results shows lower computational cost and are reasonable in complete combustion.

Key words: PDF method, bluff-body stabilized non-premixed flame, nitrogen oxides, laminar flamelet model

中图分类号:

V231.2
TK121

黄庆, 朱旻明, 叶桃红, 陈义良, 董刚. 钝体驻定湍流扩散火焰的数值研究——燃烧模型比较[J]. 计算物理, 2010, 27(2): 229-239.

HUANG Qing, ZHU Minming, YE Taohong, CHEN Yiliang, DONG Gang. Numerical Simulation of Bluff-body Stabilized Turbulent Non-premixed Flame:A Comparison of Combustion Models[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2010, 27(2): 229-239.

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[2]	王海峰, 陈义良, 陈华蕾, 刘明侯. CH₄/O₂/N₂层流火焰瞬态响应特性数值分析[J]. 计算物理, 2006, 23(2): 193-198.
[3]	徐晓, 刘林华, 陈义良, 王海峰. 氢气扩散火焰中辐射源项湍流脉动特征的PDF模拟[J]. 计算物理, 2004, 21(3): 346-350.
[4]	朱明, 陈义良, 王海峰, 董刚. 轴对称钝体后湍流扩散燃烧的PDF模拟[J]. 计算物理, 2004, 21(3): 351-356.