重型燃气轮机燃烧过程的反应动力学数值模拟

推进技术 ›› 2015, Vol. 36 ›› Issue (5): 737-744.

重型燃气轮机燃烧过程的反应动力学数值模拟

曾　文,张经璞,陈保东,马洪安,梁　双

沈阳航空航天大学航空航天工程学院，辽宁沈阳 110136,沈阳航空航天大学航空航天工程学院，辽宁沈阳 110136,沈阳航空航天大学航空航天工程学院，辽宁沈阳 110136,沈阳航空航天大学航空航天工程学院，辽宁沈阳 110136,沈阳航空航天大学航空航天工程学院，辽宁沈阳 110136

发布日期:2021-08-15
作者简介:曾　文(1977—)，男，博士后，副教授，研究领域为航空发动机燃烧过程与排放物生成的数值计算与实验。 E-mail:zengwen928@sohu.com 通讯作者:陈保东(1963—)，男，博士，教授，研究领域为航空发动机燃烧过程与排放的先进测试与数据模拟。
基金资助:
国家自然科学基金资助项目(51376133)；辽宁省自然科学基金(2013024009)；沈阳市科技攻关项目(F13024200)。

Reaction Kinetic Simulation of Combustion Process

School of Aerospace Engineering，Shenyang Aerospace University，Shenyang 110136，China,School of Aerospace Engineering，Shenyang Aerospace University，Shenyang 110136，China,School of Aerospace Engineering，Shenyang Aerospace University，Shenyang 110136，China,School of Aerospace Engineering，Shenyang Aerospace University，Shenyang 110136，China and School of Aerospace Engineering，Shenyang Aerospace University，Shenyang 110136，China

Published:2021-08-15

摘要/Abstract

摘要： 为了阐明重型燃气轮机燃烧过程的反应动力学特性，采用Gri_3.0，NUI_Galway与USC_2.0动力学模型对甲烷燃料在定容燃烧反应器中的燃烧特性进行了数值计算，并与实验结果进行了对比分析，确定了甲烷燃料的反应动力学模型；耦合该反应动力学模型与CFD计算软件，对燃用甲烷燃料的重型燃气轮机燃烧室单个火焰筒的燃烧过程进行了反应动力学分析，并与相应实验结果进行了对比分析。结果表明:与NUI_Galway及USC_2.0动力学模型相比，采用Gri_3.0动力学模型计算得到的甲烷燃料多工况下的燃烧特性与实验值吻合较好；在该重型燃气轮机燃烧室单个火焰筒中，在火焰筒头部与主燃区同时存在两个明显的呈对称状态的回流区；在该火焰筒中的高温区域，O，OH与H等活性组分以及CO₂的摩尔分数达到最大，而在低温区域CO的摩尔分数达到最大；同时，与实验值相比，采用Gri_3.0动力学模型计算得到的单个火焰筒的出口平均温度略高约4K，热点温度高约197K。

关键词: 重型燃气轮机；甲烷；燃烧特性；反应动力学特性

Abstract: In order to illustrate the reaction kinetic characteristics of the combustion process in large scale gas turbine，the combustion characteristics of methane in the constant volume combustor were simulated using the Gri_3.0，NUI_Galway and USC_2.0 reaction mechanisms. At the same time，the computed results were compared with the experimental data，and the reaction mechanism of methane was determined. The reaction kinetic characteristics of combustion process in a flame tube of the gas turbine were analyzed by combining this reaction mechanism with the CFD，and the computed results were compared with the experimental data. The results show that compared with the NUI_Galway and USC_2.0 mechanisms，the combustion characteristics of methane at some conditions simulated using the Gri_3.0 reaction mechanism agree well with the experimental data. Furthermore，there are two symmetric recirculation zones at the flame tube head and in the primary combustion zone of the flame tube，respectively. The mole fractions of active components (such as O，OH and H) and CO₂ are maximum at high temperature zone. However，the mole fraction of CO is the maximum at the low temperature zone. At the same time，compared with the experimental data，the outlet average and maximum temperature of the flame tube simulated by the Gri_3.0 reaction mechanism are higher about 4K and 197K，respectively.

Key words: Large scale；Methane；Combustion characteristics；Reaction kinetic characteristics

曾　文,张经璞,陈保东,马洪安,梁　双. 重型燃气轮机燃烧过程的反应动力学数值模拟[J]. 推进技术, 2015, 36(5): 737-744.

ZENG Wen,ZHANG Jing-pu,CHEN Bao-dong,MA Hong-an,LIANG Shuang. Reaction Kinetic Simulation of Combustion Process[J]. Journal of Propulsion Technology, 2015, 36(5): 737-744.

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