Advances in simulation of wing and nacelle stall : results of the closing symposium of the DFG Research Unit FOR 1066, December 1-2, 2014, Braunschweig, Germany

The book reports on advanced solutions to the problem of simulating wing and nacelle stall, as presented and discussed by internationally recognized researchers at the Closing Symposium of the DFG Research Unit FOR 1066. Reliable simulations of flow separation on airfoils, wings and powered engine nacelles at high Reynolds numbers represent great challenges in defining suitable mathematical models, computing numerically accurate solutions and providing comprehensive experimental data for the validation of numerical simulations. Additional problems arise from the need to consider airframe-engine interactions and inhomogeneous onset flow conditions, as real aircraft operate in atmospheric environments with often-large distortions. The findings of fundamental and applied research into these and other related issues are reported in detail in this book, which targets all readers, academics and professionals alike, interested in the development of advanced computational fluid dynamics modeling for the simulation of complex aircraft flows with flow separation.--[Résumé de l'éditeur] Front Matter....Pages I-IX Front Matter....Pages 1-1 The Delay of RANS-to-LES Transition in Hybrid RANS-LES Approaches and Some Recently Proposed Remedies....Pages 3-21 Computations of Separated Flows with a Hybrid RANS/LES Approach....Pages 23-39 Hybrid RANS/LES Study of the Development of an Airfoil-Generated Vortex....Pages 41-54 Interaction of Three-Dimensional Disturbances with the Flow Around a Two-Element High-Lift Airfoil....Pages 55-73 The Discontinuous Galerkin Method as an Enabling Technology for DNS and LES of Industrial Aeronautical Applications....Pages 75-96 Body Force Modelling of Internal Geometry for Jet Noise Prediction....Pages 97-109 Numerical Studies of Turbulent Flow Influence on a Two-Element Airfoil....Pages 111-135 CFD for Prediction of Flow Separation from Aircraft Tail Surfaces....Pages 137-150 Zonal RANS-LES Computation for Near-Stall-Airfoil Flow....Pages 151-164 Front Matter....Pages 165-165 Criteria for Crosswind Variations during Approach and Touchdown at Airports....Pages 167-187 Development and Improvement of Two Methods of Different Complexity to Simulate Atmospheric Boundary Layer Turbulence for Aircraft Design Studies....Pages 189-202 Simulation of Interaction of Aircraft with Gust and Resolved LES-Simulated Atmospheric Turbulence....Pages 203-221 A New Method to Generate Anisotropic Synthetic Turbulence for LES....Pages 223-233 Numerical Simulation of the Turbulent Flow Around a Wing....Pages 235-247 Front Matter....Pages 249-249 Integration- and Intake-Induced Flow Distortions and Their Impact on Aerodynamic Fan Performance....Pages 251-269 Flow Investigations in a Stalling Nacelle Inlet Under Disturbed Inflow....Pages 271-283 Realistic Inlet Distortion Patterns Interacting with a Transonic Compressor Stage....Pages 285-302 Unsteady CFD Simulation of Transonic Axial Compressor Stages with Distorted Inflow....Pages 303-321 Transitional Shock-Wave/Boundary-Layer Interactions in Intakes at Incidence....Pages 323-333 Front Matter....Pages 335-335 Advanced Design Approach for a High-Lift Wind Tunnel Model Based on Flight Test Data....Pages 337-350 Front Matter....Pages 335-335 Simulation of Longitudinal Vortices on a High-Lift Wing....Pages 351-366 Impact of Different UHBR-Engine Positions on the Aerodynamics of a High-Lift Wing....Pages 367-380 Numerical Investigation of the Influence of Pressure Belts on the Stall of a Transport Aircraft in Landing Configuration....Pages 381-395 Numerical Studies of Active Flow Control Applied at the Engine-Wing Junction....Pages 397-411 Back Matter....Pages 413-413 The book reports on advanced solutions to the problem of simulating wing and nacelle stall, as presented and discussed by internationally recognized researchers at the Closing Symposium of the DFG Research Unit FOR 1066. Reliable simulations of flow separation on airfoils, wings and powered engine nacelles at high Reynolds numbers represent great challenges in defining suitable mathematical models, computing numerically accurate solutions and providing comprehensive experimental data for the validation of numerical simulations. Additional problems arise from the need to consider airframe-engine interactions and inhomogeneous onset flow conditions, as real aircraft operate in atmospheric environments with often-large distortions. The findings of fundamental and applied research into these and other related issues are reported in detail in this book, which targets all readers, academics and professionals alike, interested in the development of advanced computational fluid dynamics modeling for the simulation of complex aircraft flows with flow separation.--[Résumé de l'éditeur]