TRANSAERO: A European Initiative on Transient Aerodynamics for Railway System Optimisation (Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 79)

This volume entitled contains the results obtained by a symposium which took place in Paris, France, on May 04-05, 1999 hosted by the International Union of Railways, UIC. This symposium was organised within the framework of the Brite/Euram project TRANSAERO. The TRANSAERO project bundles the expertise of three railway companies and eight universities and research institutions in Europe to improve the physical understanding of the timedependent effects of side-wind forces, train passing and pressure waves in tunnels. The goal was to find efficient and economically satisfying solutions to these problems by simultaneously regarding high-speed rolling stock, infrastructure and operating conditions. Front Matter....Pages I-XIII Front Matter....Pages 1-1 Technology Acquisition through the Research Framework Programmes of the European Union....Pages 3-9 The TRANSAERO Project....Pages 11-24 Front Matter....Pages 25-25 Full Scale Tests on Side Wind Effects on Trains. Evaluation of Aerodynamic Coefficients and Efficiency of Wind Breaking Devices....Pages 27-38 Wind Monitoring System for Full Scale Tests on Trains....Pages 39-45 The wind tunnel determination of crosswind forces and moments on a high speed train....Pages 46-60 Numerical study of the turbulent flow around the reduced-scale model of an Inter-Regio....Pages 61-74 Numerical Computation of 3—D Turbulent Flow Around High—Speed Trains Under Side Wind Conditions....Pages 75-86 WP1 Side Wind Effects: Summary and Conclusions....Pages 87-97 Front Matter....Pages 99-99 Full scale measurements on high speed train Etr 500 passing in open air and in tunnels of Italian high speed line....Pages 101-122 1/25 Scale Moving Model Tests for the TRANSAERO Project....Pages 123-135 Part 1 : Panel Method Applied to the Prediction of Unsteady Effects Caused by High-speed Trains Passing in the Open Air....Pages 136-147 Part 2 : Panel Method Applied to Problems of European High-speed Train Interoperability....Pages 148-159 Application of the Standard Aeronautical CFD Method FLOWer to Trains Passing on Open Track....Pages 160-169 Transaero Work Package 3: Trains Passing Effects — Summary and Conclusions....Pages 170-184 Front Matter....Pages 185-185 Full Scale Tests on Pressure Wave Effects in Tunnels....Pages 187-195 Reduced-scale experiments for railway applications....Pages 196-205 Reduced scale Simulation of the Compression wave Generated by the Entry of a High-Speed Train into a Tunnel....Pages 206-216 Application of the Standard Aeronautical CFD Method FLOWer to ETR500 Tunnel Entry....Pages 217-224 Numerical Simulation of the Pressure Wave Generated when a Train Enters a Tunnel....Pages 225-238 Numerical Investigation of Tunnel Extensions Attenuating the Pressure Gradient Generated by a Train Entering a Tunnel....Pages 239-248 Front Matter....Pages 185-185 An overview of wave propagation in tunnels....Pages 249-266 Experimental analysis of the propagation of pressure waves in tubes....Pages 267-275 Train/tunnel geometry effects on the compression wave generated by a high-speed train....Pages 276-289 Experimental Investigation of the Micro Pressure Wave....Pages 290-301 Measures for the Reduction of the Micro Pressure Wave....Pages 302-320 Numerical Investigation of the Micro Pressure Wave....Pages 321-341 1-d Calculations of Pressure Fluctuations Outside and Inside a Pressure Sealed High-Speed Trainset Travelling through Tunnels....Pages 342-357 1-d Calculations of Pressure Changes due to Passage of an ETR 500 through the Terranuova le Ville Tunnel....Pages 358-365 TRANSAERO Work Package 4: Pressure Wave Effects....Pages 367-377 Erratum to: The TRANSAERO Project....Pages 381-381 Back Matter....Pages 379-381 This volume entitled "TRANSAERO - A European Initiative on Transient Aerodynamics for Railway System Optimisation" contains the results of the contributors during the project th symposium which took place in Paris, France, on 4th and 5 May 1999 hosted by the International Union of Railways, UIC. This symposium was organised within the framework of the BRITE/EURAM project "TRANSAERO" under contract BRPR-CT9S-0067. The project has been co-financed by the European Union within the Fourth Research Framework Programme. More than 100 participants followed the invitation to the symposium. This great response shows the continuing interest in a relevant topic of railway technology and offered us the opportunity to present the recent results of intense European collaboration to the international community of railway aerodynamic experts. In the last few decades, mobility in Europe, based on automobiles for individual traffic and lorries for freight traffic, has grown more and more; yearly growth rates of more than 10% have often been reported by statistics. Even with a fully developed construction programme for motorways and similar high-performance roads, these growth rates cumulated over the years cannot easily be handled in an environment-friendly way. The European Commission has therefore given distinct political signals to get more passengers onto the railways. This policy represents a clear challenge for the next few decades for European railway companies: the considerable increase in mobility in a Europe with falling borders will cause a doubling of the traffic volume within the next 10 to 20 years.

This volume contains the results obtained by a symposium which took place in Paris, France, on May 04-05, 1999, hosted by the International Union of Railways, UIC. This symposium was organised within the framework of the Brite/Euram project TRANSAERO. The TRANSAERO project bundles the expertise of three railway companies and eight universities and research institutions in Europe to improve the physical understanding of the time-dependent effects of sidewind forces, train passing and pressure waves in tunnels. The goal was to find efficient and economically satisfying solutions to these problems by simultaneously regarding high-speed rolling sk, infrastructure and operating conditions.