Experimental Study on Premixed Combustion of Dimethyl Ether-Hydrogen-Air Mixtures

陈亘; 陈朝阳; 黄佐华; 苗海燕; 王锡斌

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Experimental Study on Premixed Combustion of Dimethyl Ether-Hydrogen-Air Mixtures

更新时间：2025-12-08

- Experimental Study on Premixed Combustion of Dimethyl Ether-Hydrogen-Air Mixtures
- Vol. 42, Issue 5, Pages: 542-545(2008)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK464
- Online First：10 May 2008，
  
  Published：2008
- 稿件说明：
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陈亘, 陈朝阳, 黄佐华, et al. Experimental Study on Premixed Combustion of Dimethyl Ether-Hydrogen-Air Mixtures[J]. 2008, 42(5): 542-545.
DOI：

陈亘, 陈朝阳, 黄佐华, et al. Experimental Study on Premixed Combustion of Dimethyl Ether-Hydrogen-Air Mixtures[J]. 2008, 42(5): 542-545. DOI：

摘要

在定容燃烧弹中

研究了不同燃空当量比、掺氢比和初始压力下的二甲醚-氢气-空气预混合气的一系列层流燃烧特性参数

并且系统地分析了当量比、掺氢比和初始压力对燃烧的影响.结果表明:随着掺氢比的增大

火焰传播速率、层流燃烧速率、燃烧压力升高率和质量燃烧速率都明显增大

火焰发展期和燃烧持续期则随之缩短; 当掺氢比较低时

随着当量比的升高

马克斯坦长度不断递减

即稀混合气的燃烧稳定性更高; 当掺氢比较高时

随着当量比的升高

马克斯坦长度不断递增

即浓混合气的燃烧稳定性更高; 最高燃烧压力随着初始压力的升高而升高

受掺氢比的影响相对较小.

Abstract

The laminar combustion characteristics of dimethyl ether-hydrogen-air mixture were studied at various equivalence ratios

hydrogen fractions and initial pressures by using a constant volume combustion bomb. The influences of the equivalence ratio

the hydrogen fraction and the initial pressure on flame speed and combustion characteristics were analyzed. The results show that the flame speed

the laminar burning velocity and the mass burning rate increase with the increase of the hydrogen fraction. Increasing the hydrogen fraction will increase the peak combustion pressure and shorten the combustion duration. For small hydrogen fractions

the Markstein length decreases with the increase of the equivalence ratio

indicating that the lean mixture has higher flame front stability than the rich mixture. For large hydrogen fractions

the Markstein length increases with the increase of the equivalence ratio

indicating that the rich mixture has higher flame front stability than the lean mixture. Maximum combustion pressure increases with the increase of initial pressure

and initial pressure displays greater influence on combustion pressure than doping hydrogen.

关键词

Keywords

references

王倩. 二甲醚-空气混合气层流燃烧速度的测定[J]. 内燃机学报,2007,25(4):372-378.

WANG Qian. Measurement of laminar burning velocity of dimethyl ether-air mixtures [J].Transactions of CSICE,2007,25(4):372-378.

余金荣.天然气及天然气掺氢喷射燃烧特性基础研究 [D].西安:西安交通大学能源与动力工程学院,2007.

HUANG Zuohua,ZHANG Yong,ZENG Ke, et al. Measurements of laminar burning velocities for natural gas-hydrogen-air mixtures[J]. Combustion and Flame,2006(146):302-311.

HUANG Zuohua,WANG Qian, YU Jinrong, et al. Measurement of laminar burning velocity of dimethyl ether-air premixed mixtures[J]. Fuel, 2007, 86(15):2360-2366.

BRADLEY D, HICKS R A, LAWES M, et al. The measurement of laminar burning velocities and Markstein numbers for iso-octane-air and iso-octane-n-heptane-air mixtures at elevated temperatures and pressures in an explosion Bomb [J]. Combust and Flame, 1998, 115(1/2): 126-144.

LAMOUREUX N,DJEBAYLI-CHAUMEIX N,PAILLARD C E. Laminar flame velocity determination for H2-air-He-CO2 mixtures using the spherical bomb method [J]. Exp Therm Fluid Sci, 2003,27(4):385-393.

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