Experimental study on combustion characteristics of Chinese RP-3 kerosene
Experimental study on combustion characteristics of Chinese RP-3 kerosene
复制标题
国产RP-3煤油燃烧特性实验研究
DOI：
10.1016/j.cja.2016.02.003
复制
发表时间：
2016-04-01
影响因子：
5.7
通讯作者：
Chen Baodong
中科院分区：
文献类型：
--
作者：
Ma Hongan;Xie Maozhao;Chen Baodong
为了研究我国航空发动机广泛使用的RP-3煤油的燃烧特性，在定容燃烧室内对RP-3煤油的燃烧特性进行了实验研究。实验在0.1 MPa、0.3 MPa、0.5 MPa和0.7 MPa四种不同压力和390 K、420 K和450 K三种不同温度下进行，当量比范围为0.6-1.6。在此基础上，对RP-3煤油替代燃料在一定条件下的层流燃烧速度进行了数值模拟。结果表明，提高初温或降低初压均能提高RP-3煤油的层流燃烧速度。随着当量比从0.6增加到1.6，层流燃烧速度先增大后减小。最高层流燃烧速度是在富油工况下（当量比为1.2）测得的。同时，随着初始压力的变化，Markstein长度的变化趋势与层流燃烧速度的变化趋势一致。初始压力的增加将增加火焰前锋的不稳定性，这是通过减少Markstein长度建立的。然而，与初始温度和当量比对层流燃烧速度的影响不同，当量比的增加会导致Markstein长度的减小和火焰前缘的稳定性降低，而初始温度对Markstein长度的影响尚不清楚。此外，在一定条件下，模拟的替代燃料的层流燃烧速度与RP-3煤油的相应实验数据在接近10%的偏差范围内一致。(C)2016中国航空航天学会。爱思唯尔有限公司出版
In order to illustrate the combustion characteristics of RP-3 kerosene which is widely used in Chinese aero-engines, the combustion characteristics of RP-3 kerosene were experimentally investigated in a constant volume combustion chamber. The experiments were performed at four different pressures of 0.1 MPa, 0.3 MPa, 0.5 MPa and 0.7 MPa, and three different temperatures of 390 K, 420 K and 450 K, and over the equivalence ratio range of 0.6-1.6. Furthermore, the laminar combustion speeds of a surrogate fuel for RP-3 kerosene were simulated under certain conditions. The results show that increasing the initial temperature or decreasing the initial pressure causes an increase in the laminar combustion speed of RP-3 kerosene. With the equivalence ratio increasing from 0.6 to 1.6, the laminar combustion speed increases initially and then decreases gradually. The highest laminar combustion speed is measured under fuel rich condition (the equivalence ratio is 1.2). At the same time, the Markstein length shows the same changing trend as the laminar combustion speed with modification of the initial pressure. Increasing the initial pressure will increase the instability of the flame front, which is established by decreased Markstein length. However, different from the effects of the initial temperature and equivalence ratio on the laminar combustion speed, increasing the equivalence ratio will lead to a decrease in the Markstein length and the stability of the flame front, and the effect of the initial temperature on the Markstein length is unclear. Furthermore, the simulated laminar combustion speeds of the surrogate fuel agree with the corresponding experimental datas of RP-3 kerosene within similar to 10% deviation under certain conditions. (C) 2016 Chinese Society of Aeronautics and Astronautics. Published by Elsevier Ltd.