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两种喷管中心间距下微阵列火焰场燃烧特性数值研究

  • 曾小军 ,
  • 汪小憨 ,
  • 赵黛青 ,
  • 蒋利桥 ,
  • 杨卫斌
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  • 1. 中国科学院广州能源研究所,广州 510640;
    2. 中国科学院可再生能源重点实验室,广州 510640;                                  
    3. 广东省新能源和可再生能源研究开发与应用重点实验室,广州 510640
曾小军(1980-),男,工学博士,助理研究员,主要从事微尺度燃烧及新型燃烧器开发。

收稿日期: 2016-03-02

  修回日期: 2016-04-05

  网络出版日期: 2016-06-27

基金资助

国家自然科学基金面上项目(51176193);
国家重点基础研究发展计划(2014CB239600)

Combustion Characteristics of Array Combustor for Methane Premixed Microflame under Two Nozzle Center Distance Conditions

  • ZENG Xiao-jun ,
  • WANG Xiao-han ,
  • ZHAO Dai-qing ,
  • JIANG Li-qiao ,
  • YANG Wei-bin
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  • 1. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
    2. Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China;
    3. Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China

Received date: 2016-03-02

  Revised date: 2016-04-05

  Online published: 2016-06-27

摘要

构建了处于无限阵列中管径为1.5 mm的3 × 3喷管微阵列火焰模型,采用甲烷简化机理,分别对喷管中心间距为2 mm和4 mm的微阵列火焰场燃烧特性进行数值研究。结果表明,在相同输入工况下,随着管中心间距的减小,喷管火焰间的相互影响增强,燃烧反应区域变长,最高温度增大;同时,计算区域出口CO排放增加、燃烧效率下降。喷管中心间距2 mm和4 mm两种工况下,距离管口5 mm后的区域温度都开始均匀分布,为研究温度均匀的微阵列火焰加热器提供了设计依据。

本文引用格式

曾小军 , 汪小憨 , 赵黛青 , 蒋利桥 , 杨卫斌 . 两种喷管中心间距下微阵列火焰场燃烧特性数值研究[J]. 新能源进展, 2016 , 4(3) : 201 -205 . DOI: 10.3969/j.issn.2095-560X.2016.03.006

Abstract

A numerical model of 3 × 3 array combustor consisting of Ф1.5 mm tubes for methane premixed microflame was established to learn the effects of nozzle center distance on the combustion characteristics by using the reduced mechanism for methane. The results show that the effect among micro flames is enhanced by decreasing the nozzle center distance, resulting in a lengthening region of combustion reaction and an increase of the highest combustion temperature as well as an increase in CO emissions and decrease in combustion efficiency at the outlet of calculating region. Temperature uniformity in the heating field was obtained after 5 mm from the nozzles under different nozzle center distances of 2 mm and 4 mm, which provides a design basis for the micro array combustion heater.

参考文献

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