New Results in Numerical and Experimental Fluid Mechanics IV

This volume contains 59 papers presented at the 13th Symposium of 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 also in other applications. Many of the contributions give results from federal and European-Union sponsored projects. The volume gives a broad overview of the ongoing work in this field in Germany. Covered are flow problems of high and low aspect-ratio wings and bluff bodies, laminar flow control and transition, hypersonic flows, transition and fluid mechanical modelling, LES and DNS, numerical simulation, aeroelasticity, measuring techniques and propulsion flows.

Contenu

Wake vortex and Configurations.- Large Transport Aircraft Wake Vortex Affected by Vortex Devices.- Numerical Study of Four-Vortex Aircraft Wakes.- Analysis of the Oblique Flying Wing Concept's Aerodynamic Potential by Means of Parameterisation and Optimisation.- Environmental Friendly Transport Aircraft.- High-Lift.- Application of Fast and Advanced CFD for High-Lift Configuration Design Tasks.- DLR Contributions to Code Validation Activities Within the European High Lift Project EUROLIFT.- Calculation of Attached and Separated Flow for a Tailplane Airfoil with Rudder.- Numerical Investigation of the Flow Around Different Slat Tracks on a Swept High Lift Wing Segment.- Engine-Integration.- Integrated Design of Installed Engine Nacelles Using an Inverse Design Method.- Numerical Simulation of the Propeller Flow Around a Four-Engined Aircraft in High-Lift Configuration.- Numerical Investigation of Wing-Nacelle Interference Effects at Transonic Flow Conditions for a Generic Transport Aircraft Configuration.- Numerical Simulation.- Hybrid Navier-Stokes Calculations for a Transport Aircraft with Conventional and High-Bypass Engines.- DLR i-Code for High Enthalpy Flows.- Low Aspect-Ratio Wings.- High Incidence Buffet Flow over Fighter Type Aircraft.- Flap Efficiency of a Delta Wing with an External Store Using an Euler Code for Small Disturbances.- Bluff Bodies.- Pressure and Heat Flux Measurements at the Surface of an Asymmetric Cone at Mach Number 4.6 in ISL's Shock Tunnel STB.- Incorporation of an Actuator Disk for Lattice Wing Modelling in an Unstructured Navier-Stokes Solver.- Control of Flow Around Bluff Bodies by Passive Wake Ventilation.- Laminar Flow Control and Transition.- Experimental Investigation of Local Vortex Roughness Receptivity of a Boundary Layer on an Airfoil.- Adaptive Transonic Wing Section with Natural Transition.- Secondary Instability of Superposed Steady and Unsteady Crossflow Vortices.- Hypersonic Flows.- Design and Configurations.- Inviscid Flow Computation for the Shuttle-Like Configuration PHOENIX.- Aerodynamic Design of an Ariane 5 Liquid Fly-Back Booster.- Vortical Type Flow with Respect to Jet-External Airflow Interaction.- Flowfield Topology Changes due to Fluid-Structure Interaction in Hypersonic Flow using ANSYS and TAU.- Generation of a Pre-Design Dataset for an Airbreathing Upper Stage of a Reusable Space Transportation System.- Facilities and Measuring Techniques.- High Enthalpy Shock Tunnel Flow Past a Cylinder: a Basis for CFD Validation.- End-to-End Modelling and Design of a New Operating Condition for HEG.- High Speed Flow Visualization at HEG.- Simulationen of a SERN/Afterbody Flow Field Regarding Heated Nozzle Flow in the Hypersonic Facility H2K.- Heat Transfer Measurements and Flow Visualisations in Supersonic Flow.- Propulsion and Facilities.- Numerical Simulation of Turbulent Flows Inside a Hypersonic Inlet.- PSP-Measurements on a Linear Plug Nozzle: Aerodynamic Investigations on Linear Plug Nozzle Configurations.- Application of an Air Collection and Enrichment System Aboard a TSTO Space Transport.- Aeroelasticity.- The Small Disturbance Navier-Stokes Equations: Development of an Efficient Method for Calculating Unsteady Air Loads.- Development of an Efficient Linearised Navier-Stokes Solver for Turbomachinery Applications.- DNS of Transonic Flow about an Oscillating Airfoil.- Transition and Fluidmechanical Modelling.- On the Structure and Stability of Three-Dimensional Laminar Separation Bubbles on a Swept Plate.- Receptivity Study of the Attachment-Line Instability on a Blunt Body in Supersonic Flow.- Numerical Investigation of the Flow in the Vicinity of an Isolated 3D Surface Roughness.- Separation Control in Diffuser Flow Using Periodic Excitation.- Active Control of the Separated Shear Layer in an Axisymmetric Diffuser by Means of Periodic Forcing.- Fluidmechanical Modelling; Numerical Modelling: LES and DNS.- DNS and Scaling Laws from New Symmetry Groups of ZPG Turbulent Boundary Layer Flow.- Supersonic Turbulent Channel Flow with Passive Scalar Transport.- Numerical Simulation.- Mathematical Fundamentals.- Flow Computation at All Speeds.- Parallel and Adaptive Finite Element Techniques for Flow Simulation.- Grid Generation and Flow Solvers.- Automatic Feature-Based Sampling of Native CAD Data for Surface Grid Generation.- Post-Parameterisation of CAD-Geometries Using Freeform Deformation and Grid Generation Techniques.- Low Mach-Number Preconditioning for the DLR-TAU Code and Application to High-Lift Flows.- Improvement of Upwind Schemes with the Least Square Method in the DLR TAU Code.- Measuring Techniques.- Development and Application of the Thin Oil Film Technique for Skin Friction Measurements in the Short-Duration Hypersonic Wind Tunnel.- Experimental and Semi-Empirical Study of Supersonic Separated Ramp Flow.- In-Flight and Wind Tunnel Investigations of Natural Transition on a Laminar Flow Airfoil.- Investigation of Wall and Support Interference Using Two TWIG Models of Different Scale.- Experimental Investigations on the Adaptation Accuracy of Adaptive Slotted Wind Tunnel Test Sections Using Selected Test Bodies.- Propulsion.- Flutter Stability of a Transonic Compressor Rotors - Application and Comparison of Different Numerical Methods.- Shock-Vortex-Interaction in a Transonic Turbocompressor.- Second-Moment Closure Modelling of Swirl-Induced Separation.- Influence of Transonic Flow on the Thrust Determination of TPS During Wind Tunnel Measurements.