中文摘要：

这研究的动机是由使用概率调查骚乱化学相互作用密度功能(PDF ) 方法。历久不渝的混合雷纳兹平均 Navier 司烧(RANS )/PDF 方法被用来模仿狂暴的非反应、反应的流动。联合波动速度频率作文 PDF 方程结合了雷纳兹平均密度，动量和精力方程被与有限体积(FV ) 相结合的拉格兰加恩·蒙蒂·卡洛(MC ) 方法在未组织的网孔上解决方法。稳定的非反应的流动回答的 axisymmetric 绝壁身体的模拟在这篇论文被介绍。再通行地区的计算长度在对试验性的数据的好同意。而且，有 jet-to-coflow 动量流动比率的增加的流动模式的重要变化很好被预言。另外，比较在联合 PDF 模型和二个不同雷纳兹压力模型之间被做。

英文摘要：

The motivation of this study is to investigate the turbulence-chemistry interactions by using probability density function （PDF） method. A consistent hybrid Reynolds Averaged Navier-Stokes （RANS）/PDF method is used to simulate the turbulent non-reacting and reacting flows. The joint fluctuating velocity-frequency-composition PDF equation coupled with the Reynolds averaged density, momentum and energy equations are solved on unstructured meshes by the Lagrangian Monte Carlo （MC） method combined with the finite volume （FV） method. The simulation of the axisymmetric bluff body stabilized non-reacting flow fields is presented in this paper. The calculated length of the recirculation zone is in good agreement with the experimental data. Moreover, the significant change of the flow pattern with the increase of the jet-to-coflow momentum flux ratio is well predicted. In addition, comparisons are made between the joint PDF model and two different Reynolds stress models.