Sökning: "Aerodynamic Train Model"
Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Aerodynamic Train Model.
1. Characterization of train-induced aerodynamic loads on high-speed railway vertical noise barriers
Sammanfattning : High-Speed Railway (HSR) technology requires the deployment of noise barriers to mitigate noise pollution affecting nearby residents. As train speeds increase, so does the magnitude of aerodynamic effects such as aerodynamic noise and the pressure on these barriers, meaning that these structures require robust sound insulation and structural load-bearing capacities. LÄS MER
2. Energy Consumption and Running Time for Trains : modelling of running resistance and driver behaviour based on full scale testing
Sammanfattning : The accuracy in determined energy consumption and runningtime of trains, by means of computer simulation, is dependent upon the various models used. This thesis aims at developing validated models of running resistance, train and of a generaldriver, all based on full scale testing. LÄS MER
3. Analysis of Flow Structures in Wake Flows for Train Aerodynamics
Sammanfattning : Train transportation is a vital part of the transportation system of today anddue to its safe and environmental friendly concept it will be even more impor-tant in the future. The speeds of trains have increased continuously and withhigher speeds the aerodynamic effects become even more important. LÄS MER
4. On Rail Vehicle Dynamics in Unsteady Crosswind Conditions : Studies Related to Modelling, Model Validation and Active Suspension
Sammanfattning : Crosswind stability of rail vehicles has been a research area for several decades, mainlymotivated by vehicle overturning accidents and higher speeds, but in recent times also byissues of lower energy consumption and track maintenance costs demanding lower vehi-cle weights. During everyday operation, rail vehicles are subjected to substantial lateralinfluences from track curves, track irregularities and crosswind, leading to large suspen-sion deflections and increased crosswind sensitivity. LÄS MER
5. Large-Eddy Simulation of the Flow around Simplified High-Speed Trains under Side Wind Conditions , thesis of Lic. of Engng, Division of Fluid Dynamics, Dept. of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, 2006
Sammanfattning : The flows around high speed trains, subjected to side winds, are solved using Large Eddy Simulation (LES). Two train models have been used: generic model and more realestic model (the ICE2 train) in the investigations. LÄS MER