摘要
高压涡轮流场中存在多尺度的涡系和波系结构,对涡轮部件的气动、传热以及结构强度都有重要的影响。为快速准确把握其流动机理,对Menter发展的尺度自适应CFD方法进行了改进,并将新方法分别应用于圆柱绕流以及VKI LS89跨声速涡轮叶栅等典型流动算例。结果表明改进后的尺度自适应模型具有出色的空间分辨率,模拟结果能与大涡模拟、实验数据基本吻合且计算成本约为文献中大涡模拟的2.5%。
There are multi-scale vortex systems and wave systems inside the high-pressure turbine flow,which have an important influence on the aerodynamics,heat transfer and structural strength of turbine components.In order to quickly and accurately grasp its flow mechanism,the scale-adaptive simulation(SAS)CFD model developed by Menter is further improved,and the modified technique is applied to typical cases such as flow past a circular cylinder and VKI LS89 transonic turbine cascade.It can be found that the modified SAS model has excellent spatial resolution.The simulation results are in good agreement with the large eddy simulation(LES)and experimental data,and the computational cost is about 2.5%of the large eddy simulation in the literature.
作者
王国良
仲冬冬
葛宁
WANG Guo-liang;ZHONG Dong-dong;GE Ning(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《推进技术》
EI
CAS
CSCD
北大核心
2020年第7期1502-1509,共8页
Journal of Propulsion Technology
关键词
燃气涡轮
叶栅
流场
热传导
涡系
湍流模型
自适应模型
Gas turbine
Cascade
Flow field
Heat transfer
Vortex system
Turbulence model
Self tuning model
