Hybrid RANS/LES simulation of scalar transport of slot injection into a supersonic stream

摘要：

Hybrid RANS/LES simulation is conducted to investigate the scalar transport of slot injection into a supersonic stream. Governing equations of large scale eddies are solved with fifth- order WENO scheme and effect of small scale eddies is simulated by using one-equation subgrid scale model. The subgrid convective species ux in the filtering species equation is modeled using gradient diffusion assumption. The calculated results reveal the behavior of large structures and instantaneous distribution of species. Simulations show that coherent structures evolve in a periodic mechanism and large eddy structures dominate the transport of species. Time averaged wall pressure distribution is qualitatively consistent with the experimental measurements. The separate regions in front of and behind the jet are both over-predicted, which indicates the hybrid model need further modification.

关键词： supersonic shear layerscalar mixinglarge eddy simulation

作者: M.B.Sun J.H.Liang Z.G.Wang

作者单位: College of Aerospace and Material Engineering, National Univof Defense Technology, Changsha 410073, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2007-08-15（万方平台首次上网日期，不代表论文的发表时间）