Flamelet modeling of two-phase n-dodecane supersonic combustion using a skeletal chemical reaction mechanism

摘要：

　　Numerical simulations of the direct-connect,hydrocarbon-air scramjet engine at Beihang University s Supersonic Combustion Facility were conducted using the commercial CFD(Computational Fluid Dynamics)software,FLUENT 13.0.The fuel was liquid n-dodecane,which was the main component of the aviation kerosene.The reacting turbulent flow was solved using the shear stress transport(SST)k-ω turbulence model,particles stochastic trajectory model,steady-flamelet model and a skeletal chemical reaction mechanism with 57 species and 204 reactions.The numerical results including two reacting cases with different equivalence ratios were compared well with the experimental data to validate the numerical model and provide insight into the experimental flowfield behavior.The combustion efficiency and total pressure recovery were obtained to assess the combustion performance of the model combustor.The OH and CO mass fraction contours were also used to illustrate the main combustion zone.

关键词： supersonic combustion liquid n-dodecane steady-flamelet skeletal mechanism

作者: Zhang Yan Lin Yuzhen Liu Wei Wang Jianchen Xu Xu

作者单位: National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics,School of Jet P National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics,School of Jet P School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing,100191,P. R. China

会议类型: 国际会议

会议名称: The 5th International Symposium on Jet Propulsion and Power Engineering(第五届喷气推进与动力工程国际会议)

会议地点: 北京

会议语种:英文

页码: 1-10

在线出版日期: 2014-09-15（万方平台首次上网日期，不代表论文的发表时间）