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Abstract

Aerodynamic effects during high-speed train running must be evaluated in order to avoid safety and comfort problems. This becomes all the more important as cruising speed increases. Risks are also greater in the case of trains passing by each other. However, experimental fittings adapted to the investigation of train passing-by and experimentations on real track lines are complicated and very expensive. A numerical investigation was attempted in order to evaluate unstationary forces on trains in open air regarded as an inviscid fluid. A computer code was developed on the basis of a singularity method: it includes possible compressibility and wake effects. Results were obtained concerning local and global aerodynamic loads acting on trains passing by each other.

Keywords

panel method high-speed train aerodynamics passing-by sources doublets wake

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Inviscid fluid flow around high-speed trains passing by in open air

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