Aerodynamics Research

In the design of modern trains, a range of aerodynamic effects must be considered including the effects of aerodynamic drag on fuel consumption; unpleasant pressure variations for passengers in tunnels, the stability of trains in high winds; the effect of transient pressures and slipstreams on passing trains and passengers and trackside workers; the lift-off of ballast beneath trains; and the occurrence of micro-pressure waves (sonic booms) at the exit of long tunnels. 

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