两种亚网格燃烧模型的对比研究

• 作 者: 王平 陆少杰
• 机 构: 江苏大学能源与动力工程学院,
• 出 处: 工程热物理学报
• 发表日期: 2014年12期
• 关键词: large eddy simulation swirling flame dynamically thickened-flame model flame

为详细比较动态增厚火焰模型和火焰锋面密度模型的性能,本文分别采用这两种亚网格燃烧模型对工业燃气轮机PRECCINSTA的模型燃烧室内湍流预混火焰进行了大涡模拟研究。计算结果与实验数据吻合良好,且这两种模型预测得到的速度、温度和主要组分的统计数据也非常接近。然而对于CO的分布两者的预测结果差异明显,文中对此进行了简要分析。研究还表明本文的计算结果与实验数据的吻合度与文献中报道的前期结果相比有所提高。

In order to compare the performance of the dynamic thickening flame model and the flame front density model in detail, the two sub-grid combustion models are respectively used to study the large-eddy simulation of turbulent premixed flame in the model combustion chamber of industrial gas turbine PRECCINSTA. The calculated results are in good agreement with the experimental data, and the predicted velocities, temperatures and the statistics of the main components are very close to each other. However, the difference between the prediction results of the distribution of CO is obvious, which is briefly analyzed in this paper. The study also shows that the calculated results in this paper are in good agreement with the experimental data as compared with the previous results reported in the literature.