两种喷管中心间距下微阵列火焰场燃烧特性数值研究
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
Received date: 2016-03-02
Revised date: 2016-04-05
Online published: 2016-06-27
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
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.
Key words: micro combustion; array combustor; temperature uniformity; flame heating; methane
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