Banverket tunnel aerodynamics investigation: Grödingebanan project - Tunnel transient pressures (RR-DYN-96-052)

When a train travels through a tunnel it produces sudden changes in pressure. Depending on the magnitude of these pressure transients, the resulting sensation felt by train occupants on the ears can cause considerable discomfort. As train speeds increase, the pressure pulses produced in tunnels grow, approximately in proportion to...