Numerical Drag and Lift Predictions of Transport Aircrafts
2022-26-1186
05/26/2022
- Event
- Content
- Accurate estimation of drag and lift during take-off/landing and flight of an aircraft is critical in improving its performance. The flow separation and aerodynamic forces estimation using a CFD simulation are very sensitive to numerical methods, types of grid, turbulence models and other numerical treatments. In this paper, results from the simulations of two aircraft models using a RANS based CFD software, SimericsMP+ are presented. One set of simulations are performed on a DLR-F6 model at conditions of 0.75 Mach number and 3.0e6 Reynolds number as provided in the 2nd AIAA CFD Drag Prediction Workshop. The flow behavior over a range of angle of attack during the flight condition at transonic speed is simulated for Wing Body Nacelle Pylon (WBNP) configuration of DLR-F6 model. The second set of simulations are performed on JAXA high-lift configuration Standard Model (JSM) with nacelle-off configuration. These simulations are performed for high-lift conditions of 0.172 Mach number and 1.93e6 Reynolds number as provided in 3rd AIAA CFD High Lift Prediction Workshop. The pressure distributions along with drag and lift coefficients are compared with the experimental data for both the configurations. The simulation results compare well with experimental data at both transonic speed and high-lift (low Mach number) conditions. The lift coefficients predicted in high-lift conditions match well within 5% of experimental data even around the stall region.
- Citation
- Godavarthi, R., Wang, J., and Maiti, D., "Numerical Drag and Lift Predictions of Transport Aircrafts," SAE Technical Paper 2022-26-1186, 2022, .