煤基合成柴油燃烧及排放特性的数值模拟研究
Numerical study on the combustion and emission characteristics of coal-to-liquid
基于一台压燃式发动机建立了数值模拟平台，对具有不同煤基合成柴油（coal-to-liquid，CTL）质量分数的柴油/CTL 混合燃料燃烧过程进行了三维数值模拟研究。结果表明，随着CTL 比例的增加，燃烧过程中低温反应阶段OH 质量上升的速度增加，导致低温反应进程加快，着火提前，滞燃期缩短。CTL 比例较高的燃料具有较低的预混燃烧比例、较慢的燃烧速度与较低的燃烧温度。CTL 对碳烟生成的影响机制主要体现在燃料组分和预混合燃烧比例方面。一方面，由于…查看全部>>
Based on a compression ignition engine, a simulation model was established and the combustion processes of diesel/coal-to-liquid (CTL) blends with different CTL mass fractions were studied using the three-dimensional simulation method. The results indicate that as the CTL mass fraction increases, the accumulation of OH radical is accelerated during the low-temperature reaction stage, leading to the accelerated low-temperature reaction process, the earlier ig…查看全部>>
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