摘要
利用耦合路径通量分析和敏感性分析的方法对Jet-A型航空煤油在航空发动机燃烧室工况下的燃烧反应机理进行了简化。选用POSF-4658的燃烧反应机理(1607组分、6633机理)替代Jet-A型航空煤油在航空发动机燃烧室工况下的详细的燃烧反应机理。将燃烧室工况作为简化过程的初始条件,分析得到了替代Jet-A的简化机理(122组分、331机理)。通过对替代Jet-A简化反应机理、Jet-A详细反应机理、C_(13)H_(28)机理、五步机理与实验值的比较分析可发现,得到的替代Jet-A的简化机理能够反映Jet-A型燃料主要的燃烧特性。利用国际上常用的Jet-A机理计算的绝热火焰温度、点火延迟时间及层流火焰速度与本研究提出的简化的计算值进行比较。结果表明,本研究提出的简化机理具有较高的精确度,简化机理计算得到的点火延迟时间、绝热火焰温度、层流火焰速度与详细机理计算结果的平均相对误差分别为1.2%、3.3%、3.7%。替代Jet-A简化反应机理提供了可用于航空发动机燃烧室模拟仿真的化学反应动力学模型。
The coupling path flux analytic method and sensitivity one were chosen to simplify the combustion reaction mechanism of Jet-A type aero-kerosene under the operating conditions of the combustor of an aero-engine. The combustion reaction mechanism of POSF-4658( involving 1607 components and 6633 reactions) was selected to substitute the detailed combustion reaction mechanism of Jet-A type aero-kerosene under the operating conditions of the combustor of an aero-engine. With the operating conditions of the combustor serving as the initial conditions for the simplification process,a mechanism( involving 122 components and 331 reactions) simplified for substituting that of the JetA type aero-kerosene was obtained through an analysis. By analyzing and comparing the reaction mechanism simplified for substituting that of the Jet-A type aero-kerosene,a detailed reaction mechanism of Jet-A type aero-kerosene,C_(13)H_(28)reaction mechanism and the five-step reaction mechanism with the test values,it can be found that the reaction mechanism simplified for substituting that of the Jet-A type aero-kerosene can reflect the main combustion characteristics of the Jet-A type fuel. The adiabatic flame temperature,ignition delaying time and laminar flow flame speed calculated by using the worldwide commonly used Jet-A reaction mechanism were compared with the values calculated by using the simplified reaction mechanism proposed by the authors. It has been found that the simplified reaction mechanism under discussion enjoys a relatively high precision and the average relative errors of such parameters as the ignition delaying time,adiabatic flame temperature and laminar flow flame speed calculated by using the simplified reaction mechanism and those calculated by using the detailed reaction mechanism are 1. 2%,3. 3%and 3. 7% respectively. The reaction mechanism simplified for substituting that of the Jet-A type aero-kerosene canprovide a chemical reaction kinetic model for simulating combustors in aero-engines
出处
《热能动力工程》
CAS
CSCD
北大核心
2016年第5期61-67,151-152,共7页
Journal of Engineering for Thermal Energy and Power
基金
中国民航大学天津市民用航空器适航与维修重点实验室开放基金
中央高校基本科研业务费专项(ZXH2012J003)
作者简介
王伟（1977-），男，河南许昌人，中国民航大学副教授
通讯作者：刘帅（1990-），男，中国民航大学硕士研究生．
