"Symposium Transsonicum" was founded by Klaus Oswatitsch four decades ago when there was clearly a need for a systematic treatment of flow problems in the higher speed regime in aeronautics. The first conference in 1962 brought together scientists concerned with fundamental problems involving the sonic flow speed regime. Results of the conference provided an understanding of some basic tran sonic phenomena by proposing mathematical methods that allowed for the de velopment of practical calculations. The "Transonic Controversy" (about shock free flows) was still an open issue after this meeting. In 1975 the second symposium was held, by then there was much understanding in how to avoid shocks in a steady plane flow to be designed, but still very little was known in unsteady phenomena due to a lack of elucidating experiments. A third meeting in 1988 reflected the availability oflarger computers which allowed the numerical analysis of flows with shocks to a reasonable accuracy. Because we are trying to keep Oswatitsch's heritage in science alive especially in Gottingen, we were asked by the aerospace research community to organize another symposium. Much had been achieved already in the knowledge, techno logy and applications in transonics, so IUT AM had to be convinced that a fourth meeting would not just be a reunion of old friends reminiscing some scientific past. The scientific committee greatly supported my efforts to invite scientists ac tively working in transonic problems which still pose substantial difficulties to ae rospace and turbomachinery industry.

Inhalt

1. Inviscid flow models: Steady flows.- New Results for the Normal Shock in Inviscid Flow at a Curved Surface.- Transonic Solutions for the Mach Reflection of Weak Shocks.- Interaction of a Shock Wave with the Sonic Line.- Transonic Wedge / Cone Flow Solutions Using Perturbed Potential and Euler.- Upstream Propagating Curved Shock in a Steady Transonic Flow.- Non-Uniqueness Problems in Transonic Flows.- Unsteady flows.- Unsteady Transonic Flow past Non-unique Airfoils.- Forced Oscillation of a Shock-Wave in a Transonic Channel Flow.- Nonlinear Aerodynamic Effects on Transonic LCO Amplitude of a Supercritical Airfoil.- On the Influence of Turbulence Modelling on Steady and Unsteady Flows.- Aeroelastics.- Aeroelastic Sensitivity in the Transonic Regime.- Numerical Investigation of Transonic Flutter and Modeling of Wind Tunnel Interference Effects.- Efficient Transonic Method for Aero-elastic Applications Including Aircraft/Stores.- A Unified Variational Formulation of Aero-elasticity Problem for Coupled 'Fluid-Wing' Vibration System in 3-D Unsteady Transonic Flow.- 2. Viscous flows: Viscous-inviscid interaction.- The Different Facets of an Old but Always Present Concern: Shock-Wave/Boundary Layer Interaction.- On the Effect of Area Ruling on Transonic abrupt Wing Stall.- Transonic, Laminar High Reynolds Number Flow in Slender Channels.- Viscous-Inviscid Interaction and Boundary-Layer Separation in Transonic Flows.- Boundary Layer Instabilities in Transonic Range of Velocities.- Perforated Plate Aerodynamics for Passive Shock Control.- Internal flows.- Internal Transonic Flows.- Transonic Flow past Plane Cascades: Experimental Data Analysis.- Numerical Simulation of Transonic Flow in Steam Turbine Cascades the Role of Numerical Viscosity, Grid Type andApproximation of Boundary Conditions.- Reynolds-Stress Modelling for Transonic Shock-Wave/Boundary-Layer Interaction.- Experimental techniques.- ETW A Facility for High Reynolds Number Testing.- Gurney Flaps in Transonic Flows.- Density Measurement of Large Scale Transonic Flow Fields.- Transonic Flow Phenomena of the Cold Spray Deposition Process.- 3. Numerical methods: CFD new analysis approaches.- Development of Computational Techniques for Transonic Flows: An Historical Perspective.- Transonic Aerodynamics Research Retro- and Prospective in Japan.- Implicit Euler Computations on Adaptive Meshes for Steady and Unsteady Transonic Flows.- Efficient and Refined Transonic Flow Analysis Using a New Flux Vector Splitting Scheme.- Numerical Solution of 2D and 3D Transonic Flows over an Airfoil and a Wing.- Hierarchical Formulations for Transonic Flow Simulations.- The Buffer Layer Technique Applied to Transonic Flow Calculations.- Design and Optimization tools.- Design Applications in the Industry.- How to Take into Account Deformation in a CAD-Based Euler Optimization Process.- Transonic Wing Shape Optimization Using a Genetic Algorithm.- Optimum Transonic Wing Design Using Control Theory.- Parallel Numerical Optimisation of Adaptive Transonic Airfoils.- Computation of Biobjective/Bidisciplinary Optimization.- 4. Flow control and adaptive configurations: Flow control.- A Review of Research at QinetiQ on the Control of Shock Waves.- Experimental Investigation of Transonic Aerofoil Shock / Boundary Layer Interaction Control Using Streamwise Slots.- Control of Transonic Periodic Flow on NACA0012 Aerofoil by Contour Bumps.- Transonic Flow Control Using a Navier-Stokes Solver and a Multi-Objective Genetic Algorithm.- Adaptive Configurations.- Adaptive Airfoil.-Parameterized Geometries for Configuration Adaptation.- 5. Supersonic flows: Supersonic Transport Design Aerodynamics.- Transonic Design of SST - To Employ Japanese SST as a Candidate for Near Sonic Transport.- Transonic Methods for Oblique Flying Wing SST.- Sonic Boom: Analysis and Optimization.- The Superboom as a Tricomi Problem: Extensions and Applications.- Numerical and Experimental Simulation of Sonic Boom Focusing.- Linear-Theory-Based Shape Optimization for Sonic Boom Minimization.- Sonic Boom Reduction Using an Adjoint Method for Supersonic Transport Aircraft Configurations.- 6. Real gas effects: Multiphase flow.- Development of a Numerical Method for Simulating Transonic Multiphase Flows.- Unsteady Nonadiabatic Transonic Two-Phase Flow.- Dissociation.- Sonic Line and Shock Detachment in Hypervelocity Cone Flow.- List of Participants.