This volume contains the contributions to the 15. Symposium of the STAB (German Aero-space Aerodynamics Association). In this association all those German scientists and engineers from universities, research establishments and industry are involved, who are doing research and project work in numerical and experimental fluid mechanics and aerodynamics, mainly for aerospace but for other applications, too. Many of the contributions are presenting results from national and European Community sponsored projects. The volume gives a broad overview over the ongoing work in this field in Germany, with the topics being high-aspect ratio wings, low aspect-ratio wings, bluff bodies, laminar flow control and transition, active flow control, hypersonic flows, aeroelasticity, aeroacoustics, mathematical fundamentals/ numerical simulation, physical fundamentals, and facilities.

Zusammenfassung

This volume features the contributions to the 15th Symposium of the STAB (German Aerospace Aerodynamics Association). Papers provide a broad overview of ongoing work in Germany, including high aspect ratio wings, low aspect ratio wings, bluff bodies, laminar flow control and transition, active flow control, hypersonic flows, aeroelasticity, aeroacoustics, mathematical fundamentals, numerical simulations, physical fundamentals, and facilities.

Inhalt
Airplane Acrodynamics.- An Airbrake Design Methodology for Steep Approaches.- High-Reynolds-Number Design of a Wing Section Including Control of Boundary Layer Properties.- Numerical Analysis of Wing Vortices.- Studies on Tailplane Stall for a Generic Transport Aircraft Wind Tunnel Model.- URANS and DES Simulation of Flow Around a Rectangular Cylinder.- Active Manipulation of a Rectangular Wing Vortex Wake with Oscillating Ailerons and Winglet-Integrated Rudders.- A New Actuator Disk Model for the TAU Code and Application to a Sailplaine with a Folding Engine.- Design of a Retrofit Winglet for a Transport Aircraft with Assessment of Cruise and Ultimate Structural Loads.- Flow Control.- Numerical Simulation of a Wing with a Gapless High-Lift System Using Circulation Control.- Shock Control Bumps on Flexible and Trimmed Transport Aircraft in Transonic Flow.- A Flat Plate Experiment for Investigations of Vortex Generator Jets at High Reynolds Number.- Experimental Simulation and Test Techniques.- Measurement of Unsteady Surface Forces by Means of Piezoelectrical Copolymer Coatings.- Studies of Reynolds Number Effects on Wing Tip Vortex Positions by Means of Laser Light Sheet (LLS) and Background Oriented Schlieren (BOS) Technique Under Cryogenic Conditions.- Project ForMEx A New CFD Approach for Transposition of Wind Tunnel Data Towards Flight Conditions.- Pressure and Heat Flux Measurements on the Surface of a Low-Aspect-Ratio Circular Cylinder Mounted on a Ground Plate.- An Investigation into Internal and External Force Balance Configurations for Short Duration Wind Tunnels.- Numerics.- Multiple Discipline Take-Off Weight Minimization for a Supersonic Transport Aircraft.- Three-Dimensional Discontinuous Galerkin Codes to Simulate Viscous Flow by SpatialDiscretization of High Order and Curved Elements on Unstructured Grids.- The Space-Time Expansion DG Method.- The Parallel Mesh Deformation of the DLR TAU-Code.- Simulation of Oscillating Airfoils and Moving Flaps Employing the DLR-TAU Unsteady Grid Adaptation.- RANS Simulations with One and Six Degrees of Freedom Rigid Body Motions.- Improvement of the Automatic Grid Adaptation for Vortex Dominated Flows Using Advanced Vortex Indicators with the DLR-Tau Code.- Adjoint Algorithms for the Optimization of 3d Turbulent Configurations.- Enhanced Runge-Kutta/Implicit Methods for Solving the Navier-Stokes Equations.- Laminar Flow Control and Transition.- Navier-Stokes High-Lift Airfoil Computations with Automatic Transition Prediction Using the DLR TAU Code.- Manipulation of Attachment Line Transition by Geometry Modification at the Slat of a Multi-element Airfoil.- Using CryoTSP as a Tool for Transition Detection and Instability Examination at High Reynolds Numbers.- Direct Numerical Simulation of a Short Laminar Separation Bubble and Early Stages of the Bursting Process.- Experimental Investigations of Controlled Transition in a Laminar Separation Bubble at an Axisymmetric Diffuser.- Development of a Sensor-Actuator-System for Active Control of Boundary Layer Instabilities in Compressible Flows.- Evaluation of Initial Amplitudes of Free-Stream Excited Tollmien-Schlichting Waves from Flight-Test Data.- The Role of Turbulent Dissipation for Flow Control of Near-Wall Turbulence.- Hypersonic Flows.- Radical Farming in Scramjets.- Aerothermodynamic Investigation of the Pre-X Configuration in HEG.- SHEFEX A First Aerodynamic Post-flight Analysis.- Simulation of Magnetohydrodynamic Effects on an Ionised Hypersonic Flow by Using the TAU Code.- Heat Fluxes Inside a CavityPlaced at the Nose of a Projectile Measured in a Shock Tunnel at Mach 4.5.- Experimental Investigation and Numerical Simulation on a Missile Radome at Mach 6.- Turbomachines.- Control of Flow Separation in Adverse Pressure Gradients by Means of Crosswise Grooved Surfaces for Turbo Machine Applications.- Wave Drag Reduction Approach for Lattice Wings at High Speeds.- Forces and Velocity Measurements in Ship Propulsion Systems.- Flow Past Bodies.- Numerical Simulation of the Flow Around a Finite Cylinder with Ground Plate in Comparison to Experimental Measurements.- Numerical Simulation of Aerodynamic Problems with the SSG/LRR-? Reynolds Stress Turbulence Model Using the Unstructured TAU Code.- Numerical Simulation of the Flow Field Around the Stratospheric Observatory for Infrared Astronomy.- Large Eddy Simulation / Direct Numerical Simulation.- DNS of Compressible Inert and Infinitely Fast Reacting Mixing Layers.- Developement of a Numerical Procedure for Direct Simulations of Turbulent Convection in a Closed Rectangular Cell.- Computation of Supersonic Base Flow Using Detached Eddy Simulation.- Large-Eddy Simulation of Tundish Flows Using Preconditioning.- Numerical Investigations of Effusion Cooling in Hypersonic Boundary-Layer Flow.- Aeroacoustics.- Numerical Investigation of Flow-Induced Noise Generation at the Nozzle End of Jet Engines.- Numerical Analysis of Sound Generating Mechanisms of a Hi...