ABSTRACT The main purpose of the current study is mathematical modelling and validation of mass transfer phenomenon in homogeneous charge compression ignition engines. A validated multi-zone model coupled to a semi-detailed chemical kinetics is used to predict homogeneous charge compression ignition combustion and emissions. Heat and Mass transfer submodels are linked to the multi-zone model. Bulk flow and diffusion mass transfer between zones are considered. The results indicate that the diffusion mass transfer is negligible in homogeneous charge compression ignition engines. Bulk flow mass transfer plays a critical role in homogeneous charge compression ignition simulation and applying it in the multi-zone model leads to accurate prediction of the start of combustion, peak pressure and exhaust emissions. The results show that the maximum error changes from 90% to 5% in carbon monoxide prediction and from 98% to 14% in unburned hydrocarbons prediction, using the mass transfer submodel.

中文翻译：

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基于热力学多区模型的均质充量压燃发动机传质现象的数学建模与验证

摘要 当前研究的主要目的是对均质充量压燃发动机中的传质现象进行数学建模和验证。与半详细化学动力学耦合的经过验证的多区域模型用于预测均质充量压燃燃烧和排放。传热和传质子模型链接到多区域模型。考虑了区域之间的体积流和扩散传质。结果表明，在均质充量压燃式发动机中，扩散传质可以忽略不计。大流量传质在均质充量压缩点火模拟中起着至关重要的作用，将其应用于多区模型可以准确预测燃烧开始、峰值压力和废气排放。