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首页> 外文会议>Proceedings of the 2009 spring technical conference of the ASME Internal Combustion Engine Division >A CONTINUOUS MULTI-COMPONENT FUEL FLAME PROPAGATION AND CHEMICAL KINETICS MODEL
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A CONTINUOUS MULTI-COMPONENT FUEL FLAME PROPAGATION AND CHEMICAL KINETICS MODEL

机译：连续多组分火焰的传播和化学动力学模型

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摘要

A continuous multi-component fuel flame propagation and chemical kinetics model has been developed. In the multi-component fuel model, the theory of continuous thermodynamics was used to model the properties and composition of fuels such as gasoline. The difference between the current continuous multi-component fuel model and previous similar models in the literature is that the source terms contributed by chemistry in the mean and the second moment transport equations have been considered. This new model was validated using results from a discrete multi-component fuel model. In the flame propagation and chemical kinetics model, five improved combustion sub-models were also integrated with the new continuous multi-component fuel model. To consider the change of local fuel vapor mixture composition, a "PRF adaptive" method is proposed that formulates a relationship between the fuel vapor mixture PRF number (or octane number) and the fuel vapor mixture composition based on the mean molecular weight and/or variance of the fuel vapor mixture composition in each cell. Simulations of single droplet vaporization with a single-component fuel (iso-octane) were compared with multi-component fuel cases.
机译：建立了连续的多组分燃料火焰传播和化学动力学模型。在多组分燃料模型中，使用连续热力学理论对燃料（例如汽油）的性质和成分进行建模。当前的连续多组分燃料模型与文献中以前的类似模型之间的差异在于，均值和第二矩传输方程中考虑了化学作用的源项。使用离散多组分燃料模型的结果验证了该新模型。在火焰传播和化学动力学模型中，五个改进的燃烧子模型也与新的连续多组分燃料模型集成在一起。为了考虑局部燃料蒸气混合物组成的变化，提出了一种“ PRF自适应”方法，该方法根据平均分子量和/或公式来表示燃料蒸气混合物的PRF数（或辛烷值）与燃料蒸气混合物的组成之间的关系每个单元中燃料蒸气混合物成分的变化。将单组分燃料（异辛烷）的单滴汽化模拟与多组分燃料的情况进行了比较。

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