New Results in Numerical and Experimental Fluid Mechanics V: Contributions to the 14th Stab/Dglr Symposium Bremen, Germany 2004

ISBN-13: 9783540332862 / Angielski / Twarda / 2006 / 530 str.

Hans Josef Rath; Carsten Holze; Hans-Joachim Heinemann

Opis

This volume collects contributions to the 14th Symposium of the STAB (German Aerospace Aerodynamics Association). The association involves German scientists and engineers from universities, research establishments and industry who are doing research and project work in numerical and experimental fluid mechanics and aerodynamics, mainly for aerospace but for other applications, too. The volume gives a broad overview of ongoing work in Germany in this field.

Spis treści

High Aspect-Ratio Wings.- High Reynolds-Number Windtunnel Testing for the Design of Airbus High-Lift Wings.- Aerodynamic Analysis of Flows with Low Mach- and Reynolds-Number under Consideration and Forecast of Transition on the Example of a Glider.- Analysis of PIV Flow Measurements behind the ALVAST-Model in High-Lift Configuration.- Effect of Differential Flap Settings on the Wake Vortex Evolution of Large Transport Aircraft.- Investigations on the Influence of Fins on the Extended Nearfield of a Wing inHigh-Lift Configuration.- Application of the PSP Technique in Low Speed Wind Tunnels.- Investigation of tailplane stall for a generic transport aircraft configuration.- Numerical analysis of transport aircraft using different wing tip devices.- Aerodynamic Optimisation of a Flying Wing Transport Aircraft.- Low Aspect-Ratio Wings.- Delta Wing Steady Pressure Investigations for Sharp and Rounded Leading Edges.- Computation of Delta Wing Flap Oscillations with a Reynolds-Averaged Navier-Stokes Solver.- Experimental study on the Flowfield of a Delta-Canard-Configuration with Deflected Leading Edge.- Numerical simulation of maneuvering combat aircraft.- Experimental investigation on periodic rolling of a delta wing flow at transonic Mach numbers.- Numerical Design of a Low-Noise High-Lift System for a Supersonic Aircraft.- Helicopters.- Chimera Simulation of a Complete Helicopter with Rotors as Actuator Discs.- Extension of the Unstructured TAU-Code for Rotating Flows.- Unsteady Euler and Navier-Stokes Simulations of Propellers with the Unstructured DLR TAU-Code.- Aerodynamic Analysis of Jet-Blast using CFD considering as example a Hangar and an AIRBUS A380 configuration.- Bluff Bodies.- Flow Field Study of a Supersonic Jet Exiting into a Supersonic Stream.- Behavior of Supersonic Overexpanded Jets Impinging on Plates.- Study of Supersonic Flow Separation Induced by a Side Jet and its Control.- Analytically obtained data compared with shock tunnel heat flux measurements at a conical body at M = 6.- Laminar Flow Control and Transition.- Navier-Stokes Airfoil Computations with Automatic Transition Prediction using the DLR TAU Code - A Sensitivity Study.- Prediction of attachment line transition for a high-lift wing based on two-dimensional flow calculations with RANS-solver.- RANS Simulation and Experiments on the Stall Behaviour of a Tailplane Airfoil.- Experimental and Numerical Investigations of Flow Separation and Transition to Turbulence in an Axisymmetric Diffuser.- In-Flight and Wind Tunnel Investigalions of Instabilities on a Laminar Wing Glove.- Steady three-dimensional Streaks and their Optimal Growth in a Laminar Separation Bubble.- Applicability and quality of linear stability theory and linear PSE in swept laminar separation bubbles.- Active Flow Control.- Drag Reduction of an Ahmed Car Model by Means of Active Separation Control at the Rear Vehicle Slant.- Increasing Lift by Means of Active Flow Control on the Flap of a Generic High-Lift Configuration.- Influencing the Mixing Process in a Turbulent Boundary Layer by Pulsed Jet Actuators.- Active Flow Control by Surface Smooth Plasma Actuators.- Hypersonic Flows.- Boundary Layer Influence on Supersonic Jet/Cross-Flow Interaction in Hypersonic Flow.- Numerical Rebuilding of a Generic Body-Flap Model in an Arc Heated Facility.- Experimental and Numerical Investigations of Shock/Turbulent Boundary Layer Interaction on a Double Ramp Configuration.- Time Accurate Simulation of Turbulent Nozzle Flow by the DLR TAU-Code.- Quantitative Comparison of Measured and Numerically Simulated Erosion Rates of SiC Based Heat Shield Materials.- High-End Concept to Launch Micro-Satellites into Low-Earth-Orbit based on Combination of a Two-Stage Rocket and a Railgun-System.- Aeroelasticity.- Numerical Simulation of Steady and Unsteady Aerodynamics of the WIONA (Wing with Oscillating Nacelle) Configuration.- Computation of the Flutter Boundary of the NLR 7301 Airfoil in the Transonic Range.- Aeroacoustics.- The Noise Criteria within Multidisciplinary High-Lift Design.- Effect of Noise Reducing Modifications of the Slat on Aerodynamic Properties of the High-Lift System.- Experimental Study on Noise Reduction through Trailing Edge Brushes.- A Study on Trailing Edge Noise Sources Using High~Speed Particle Image Velocimetry.- Towards the Applicability of the Modified von Kármán Spectrum to Predict Trailing Edge Noise.- Numerical simulation of combustion noise using acoustic perturbation equations.- Mathematical Fundamentals/Numerical Simulation.- Toward efficient solution of the compressible Navier-Stokes equations.- Direct Numerical Simulation of a Turbulent Flow Using a Spectral/hp Element Method.- Numerical simulation of aerodynamic problems with a Reynolds stress turbulence model.- Efficient Large-Eddy Simulation of Low Mach Number Flow.- Implementation and Usage of Structured Algorithms within an Unstructured CFD-Code.- Numerical Flow Simulation with Moving Grids.- Appropriate Turbulence Modelling for Turbomachinery Flows using a Two-Equation Turbulence Model.- Numerical determination of dynamic derivatives for transport aircraft.- Detached-eddy simulation of the delta wing of a generic aircraft configuration.- Small Disturbance Navier-Stokes Equations: Application on Transonic Two-dimensional Flows Around Airfoils.- Numerical and experimental investigations of turbulent convection with separation in aircraft cabins.- Physical Fundamentals.- Investigation of Influence of Different Modelling Parameters on Calculation of Transonic Buffet Phenomena.- Anisotropy Evolution in Relaminarizing Turbulent Boundary Layers: a DNS-aided Second-Moment Closure Analysis.- Turbulent Channel Flow with Periodic Hill Constrictions.- Turbulent Flow Separation Control by Boundary-Layer Forcing: A Computational Study.- Facilities.- Implementation of Propeller Simulation Techniques at DNW.

Blurb

This volume contains the contributions to the 14. Symposium of the STAB (German Aerospace 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.