cfd湍流模型使用技巧培训.pdf

• CFD湍流模型使用技巧培训 CFD湍流模型使用技巧培训 目录 ANSYS CFD 湍流模型新发展 ANSYS CFD 湍流模型使用技巧 ANSYS CFD 湍流模型验证案例 Flow Separation Flow Reattachment Corner Vortices 图片 大图 Mixing /combustion Transition Vortical Flows NASA X-29 Unsteady Effects ANSYS CFD 湍流模型新发展  RANS modelling key to industrial CFD  Laminar-turbulent Transition modelling  Scale-Resolving Simulation (SRS)  SAS – globally unstable flows  DDES – globally and locally unstable flows  ELES/WMLES marginally unstable flows ANSYS Fluent 湍流模型 One-Equation Model Increase in Spalart-Allmaras computational cost Two-Equation Models Standard k–ε RNG k–ε Realizable k–ε RANS Models Standard k–ω SST k–ω k-kl-w Transition Model (3 eq.) SST Transition Model (4 eq.) 4-Equation v2f Model Reynolds Stress Model Detached Eddy Simulation DES/SAS Large Eddy Simulation ANSYS CFX 湍流模型 A large number of turbulence models are available in CFX, some have very specific applications while others can be applied to a wider class of flows with a reasonable degree of confidence RANS Eddy-viscosity Models: RANS Reynolds-Stress Models:  Zero Equation model.  LRR Reynolds Stress  SA model  QI Reynold