转子发动机燃烧过程二维数值模拟的比较研究

A Comparative Study of Turbulence Models for Simulating Combustion Process in Rotary Engine

基于Fluent平台,选择SST k-ω模型、标准k-ε模型以及RNG k-ε模型对转子发动机燃烧过程进行了数值模拟.利用不同湍流模型比较研究表明,RNG k-ε模型的总体预测效果最好,标准k-ε模型预测效果次之,而SST k-ω模型的预测效果最差.本研究结果对合理选择湍流模型来模拟转子发动机的流场和污染物的分布具有参考作用.

The platform of FLUENT is used to simulate the combustion process in rotary engine with three turbulent models （SST k- ω model, RNG k-ε model, the standard k-ε model）. The result indicates that RNG k-ε model shows the best overall performance, the standard k-ε model does the next and SST k-ω model does the last. This result provides some reference to the selection of appropriate models for simulating rotary engines＇ flow field and pollutant dispersion.