PDF方法模拟钝体驻定的湍流扩散火焰

计算物理 ›› 2008, Vol. 25 ›› Issue (6): 733-743.

PDF方法模拟钝体驻定的湍流扩散火焰

黄庆^1,2, 朱旻明², 叶桃红², 刘明侯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, 安徽合肥 230027;
3. 南京理工大学动力工程学院, 江苏南京 210094

收稿日期:2007-07-09 修回日期:2007-12-10 出版日期:2008-11-25 发布日期:2008-11-25
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研究.
基金资助:
国家自然科学基金(50506028)资助项目

PDF Simulation of Bluff-body Stabilized Turbulent Non-premixed Flame

HUANG Qing^1,2, ZHU Minming², YE Taohong², LIU Minghou², 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. Institute of Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Received:2007-07-09 Revised:2007-12-10 Online:2008-11-25 Published:2008-11-25

摘要/Abstract

摘要： 采用标量联合的概率密度函数方法,对钝体驻定的湍流射流扩散Sydney火焰HM1进行数值模拟,结合当地自适应建表方法加速化学反应计算,用修正的LRR-IP雷诺应力模型求解速度场.首次对3种不同规模的甲烷化学反应动力学机理进行研究,并与实验数据进行比较,结果表明,模型和反应机理很好地预测了速度场和标量场的变化及局部熄火现象,而考虑反应机理中的C2化学对火焰HM1的影响不大.

关键词: 概率密度函数方法, 当地自适应建表, 钝体驻定扩散火焰, 局部熄火

Abstract: A joint-scalar probability density function (PDF) model is used to simulate bluff-body stabilized turbulent non-premixed Sydney flames HM1. In Situ Adaptive Tabulation (ISAT) algorithm is used to accelerate chemistry calculations. A modified LRR-IP Reynolds stress model is applied to obtain mean flow and turbulent mixing fields. We consider three chemical kinetical schemes for methane chemistry. Simulation results are compared with experimental data. It shows that the model and mechanisms predict flow field, scalar field and local extinction well. C2 chemistry has minor effect on flame HM1.

Key words: probability density function method, in Situ adaptive tabulation, bluff-body stabilized non-premixed fame, local extinction

中图分类号:

V231.2
TK121

黄庆, 朱旻明, 叶桃红, 刘明侯, 陈义良, 董刚. PDF方法模拟钝体驻定的湍流扩散火焰[J]. 计算物理, 2008, 25(6): 733-743.

HUANG Qing, ZHU Minming, YE Taohong, LIU Minghou, CHEN Yiliang, DONG Gang. PDF Simulation of Bluff-body Stabilized Turbulent Non-premixed Flame[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2008, 25(6): 733-743.

[1]	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.
[2]	王海峰, 陈义良. 湍流扩散火焰局部熄火和再燃现象的PDF模拟[J]. 计算物理, 2004, 21(6): 471-476.