摘要
基于湍流的 K- ε模型和改进的 EBU- Arrehnius燃烧模型 ,考虑了障碍物对流动的附加作用 ,通过修改方程的源项 ,建立了湍流加速火焰的理论模型 .文中选用Simple格式 ,壁面边界层采用壁面函数法处理 ,模拟了在三维空间中不同高度的障碍物对火焰传播速度的影响 。
Based on the k ε turbulence model and the improved EBU Arrehnius combustion model, considered the additional influence of obstacle, the theories model of flame acceleration by turbulence is created through modified the source term in equations. In this paper, the SIMPLE algorithm is adopted to solve the problem. The wall function is chosen to treat the near wall regions. The phenomena that flame are accelerated different height by obstacle is computed in three dimenson volume. The result is analysed in theory.
出处
《弹道学报》
CSCD
北大核心
2001年第2期32-36,59,共6页
Journal of Ballistics
基金
国家自然科学基金资助项目 ( 1 9832 0 30 )
关键词
湍流
燃烧
障碍物
turbulence, combustion, obstacle
