Abstract
The Scale-Adaptive Simulation (SAS) based on SST turbulence model is more and more popular as a new hybrid RANS/LES method. The flow around AS239 airfoil at the maximum lift condition is simulated by SST-SAS to test its behavior in the mild separation. Compared with results from SST-DES and SST-DDES, SST-SAS on one hand overcomes the Grid Induced Separation (GIS) near the boundary like the delay of RANS in SST-DDES and on the other hand, it decreases the grey area in the wake and gets clearer vortexes and more accurate velocity profile than those obtainable with SST-DDES.
| Original language | English |
|---|---|
| Pages (from-to) | 337-340 |
| Number of pages | 4 |
| Journal | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| Volume | 32 |
| Issue number | 3 |
| State | Published - Jun 2014 |
Keywords
- Airfoils
- Computer simulation
- Drag coefficient
- Flow separation
- Grey area
- Grid Induced Separation (GIS)
- Large eddy simulation
- Large Eddy Simulation (LES)
- Lift
- Navier Stokes equations
- Pressure distribution
- SST-DDES
- SST-DES
- SST-SAS
- Turbulence models
- Velocity distribution
- Vortex flow
- Wakes