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Experimental set-up for the study of pressure waves propagation in ducts and its application in tunnels for high speed trains


Author/s: Félix Sorribes Palmer, Oscar López García

A low-cost experimental facility has been built to perform scale measurements of the pressure waves generated by a high speed train entering inside a tunnel, in order to study possible configurations to reduce the pressure reflected back at the tunnel exit. The reflection coefficient of some tunnel terminations has been measured and the influence of the porosity at the exit has been evaluated by using the Acoustic Pulse Reflectometry method (APR).

Keywords: Pressure waves, high speed trains, tunnel.

Publication: Vía Libre Railway Research Nº 3 February 2012, pp. 73-78


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