中文摘要：

步详细说明了化学动力学的有 16 的直接数字的模拟(DNS ) 方法与发出瘦燃烧产品进宽热 coflowof 的 H_2/N_2 燃料被用于提起的狂暴的喷气火焰，在 1045 K 和低氧集中的温度。化学反应被被主程序每次叫在里面的 CHEMKIN 的图书馆功能处理步。平行计算技术在模拟基于传递接口方法(MPI ) 的消息被使用。所有盒子被 12 个中央处理器在一台高效计算机上运用平均 system.Faver 的 DNS 结果到平均短暂侧面的长时间并且与试验性的数据相比被获得。在喷气火焰的旋涡的手卷的纸烟和进化很好被捕获。在在不同旋转方向的互相吸引的一样的旋转方向和那些的旋涡互相打退。通过在旋涡之间的复杂相互作用，原来的对称的旋涡结构能被联合变换成非对称、更复杂的结构，失真并且旋涡切开。H 的短暂侧面，哦并且在 5.76 ms 的 H_2O 集体部分在喷气火焰显示出火焰结构，特别自动点火区域清楚地。起飞高度是大约 9 d -- 11 d，与试验性的观察一致。火焰表的 Atthe 角落点由 OHand H 侧面显示了，燃烧被火焰弯曲总是提高并且扩大了居民时间。骚乱紧张的侧面证明火焰从原版被传播二张外面的火焰表进核心。DNSresults 能在开发更精确、更通用的骚乱模型被考虑。

英文摘要：

The direct numerical simulation （DNS） method with 16 steps detailed chemical kinetics was applied to a lifted turbulent jet flame with H2/N2 fuel issuing into a wide hot coflow of lean combustion products, at temperature of 1045 K and low oxygen concentrations. The chemical reactions were handled by the library function of CHEMKIN which was called by the main program in every time step. Parallel computational technology based on message passing interface method （MPI） was used in the simulation. All the cases were run by 12 CPUs on a high performance computer system. Faver-averaged DNS resuits were obtained by long time averaging the transient profile and compared with the experimental data. The roll-up and evolution of the vortices in jet flame were well captured. The vortices in the same rotating direction attracted each other and those in different rotating directions repulsed each other. Through complex interactions between vortices, the original symmetrical vortex structure could be converted into nonsymmetrical and more complex structures by combination, distortion and splitting of the vortices. The transient profiles of H, OH and H20 mass fraction at 5.76 ms showed the flame structure in jet flame, especially the autoignition regions clearly. The lift-off height was about 9 d-11 d, in agreement with the experimental observation. At the corner point of the flame sheet indicated by OH and H profiles, the combustion was always enhanced by the flame curvature and extended resident time. The profiles of turbulence intensities show that the flames were diffused from the original two outside flame sheets into the core. The DNS results can be considered in developing more accurate and more universal turbulence models.