国防科技大学学报2011，Vol.33Issue(1)：1-6,6.
支板喷射超声速燃烧流场三维大涡模拟
Three Dimensional Large Eddy Simulation of Supersonic Combustion Flowfield with Strut
摘要
Abstract
Flamelet model and hybrid LES/RANS method were used to simulate SCRAMJET with strut for the Chenmiceal Propulsion of theGerman Aerospaee Center (DLR). The effect of reaction on turbulence was discussed, and comparison between 2D and 3D simulation were presented. The results show the following indication: (1) Mixing is controlled by large eddy scales in nonreacting flow,and the shear layer has three effects obviously; In addition, the combination and pairing of large eddy scales can be seen in 2D simulation, while stretching, distorting and breaking up can be seen in 3D simulation; (2) In reacting case, jet penetration decreases and recirculation zone becomes larger, while, owing to heat release, large eddy scales turn up and saturation appears late. (3)Numerical shadow picture displays good agreement with experimental shadow photograph, while velocity and temperature measurements are consistent with experimental data qualitatively and quantitatively, but 3D model is superior to 2D model in result accuracy.关键词
大涡模拟/超声速湍流燃烧/火焰面模式Key words
large eddy simulation/supersonic turbulent eombustion/flamelet model分类
航空航天引用本文复制引用
范周琴,孙明波,刘卫东..支板喷射超声速燃烧流场三维大涡模拟[J].国防科技大学学报,2011,33(1):1-6,6.基金项目
国家自然科学基金资助项目(50906098) （50906098）
高等学校博士点新教师专项科研基金项目(20094307120005) （20094307120005）
