|本期目录/Table of Contents|

[1]暴秀超,刘福水,刘兴华. 氢气预混层流燃烧球形膨胀火焰的拉伸研究[J].燃烧科学与技术,2011,(03):237-242.
 BAO Xiu-chao,LIU Fu-shui,LIU Xing-hua. Stretch of Hydrogen-Air Outwardly PropagatingSpherical Laminar Premixed Flames[J].Journal of Combustion Science and Technology,2011,(03):237-242.
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 氢气预混层流燃烧球形膨胀火焰的拉伸研究()
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《燃烧科学与技术》[ISSN:1006-8740/CN:12-1240/TK]

卷:
期数:
2011年03期
页码:
237-242
栏目:
出版日期:
2011-06-15

文章信息/Info

Title:
 Stretch of Hydrogen-Air Outwardly Propagating
Spherical Laminar Premixed Flames
作者:
 暴秀超12刘福水1刘兴华1
 1. 北京理工大学机械与车辆工程学院,北京 100081;2. 西华大学交通与汽车工程学院,成都 610039
Author(s):
 BAO Xiu-chao12LIU Fu-shui1 LIU Xing-hua1
 1. School of Mechanical and Vehicular Engineering,Beijing Institute of Technology,Beijing 100081,China;
2. School of Transportation and Automotive Engineering,Xihua University,Chengdu 610039,China
关键词:
 氢气层流燃烧拉伸定容燃烧弹
Keywords:
 hydrogenlaminar burningstretchconstant volume combustion bomb
文献标志码:
A
摘要:
 采用高速纹影系统和定容燃烧弹对氢气预混层流燃烧球形膨胀火焰的拉伸进行了研究.分别改变燃空当量
比(0.3~4.0)、初始温度(283~400,K)、初始压力(0.05~0.30,MPa)的条件下对比分析拉伸的变化规律,以及拉伸对
火焰速度、燃烧速度的影响规律,还解释了拉伸对不等扩散不稳定和流体力学不稳定的影响机理.研究结果表明,
随着半径的增大,拉伸率成幂函数关系逐渐减小,其指数和系数值随燃空当量比、温度、压力的变化有明显的变化
规律;火焰拉伸的存在使得火焰速度和燃烧速度发生改变,同时它还是火焰不等扩散不稳定和流体力学不稳定发生
的前提条件.
Abstract:
 Using high-speed schlieren photography,the stretch of hydrogen-air outwardly propagating spherical
premixed flame is studied in a constant volume combustion bomb at different fuel-equivalence ratios(0.3—4.0),
temperatures(283—400,K),and pressures(0.05—0.3,MPa). The influence rules of stretch on flame speed and burning
speed are analyzed,and the influence mechanism of stretch on unequal diffusion instability and hydrodynamic
instability is explained. The results show that stretch rate decreases as a power function of radius,and that its index
and coefficient change obviously with fuel air equivalence ratio,temperature and pressure. The presence of stretch
flame changes flame speed and burning speed,and it is also the precondition for the occurrence of unequal diffusion
instability and hydrodynamic instability.

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备注/Memo

备注/Memo:
 收稿日期:2010-06-20.
基金项目:国家自然科学基金资助项目(50976014).
作者简介:暴秀超(1981— ),女,博士,baoxiuchao@163.com
通讯作者:刘福水,fushui_liu@bit.edu.cn
更新日期/Last Update: