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Communication Dans Un Congrès Année : 2000

In-flow acoustic measurements on high speed trains

Résumé

Causality techniques arc successfully applied to acoustic measurements on high speed trains (TGV) at speeds ranging up to 350 km/h. The sound radiated by a source is extracted from the signal of an" in-now" pressure probe attached the train side by correlating it to signals obtained from" detection probes" located near the sources. The technique is validated in a wind tunnel experiment and on board of a high speed train with a loudspeaker type source. Then it is applied to the detection of aerodynamic sources in the inter coach spacing where two approaches can he distinguished, a technique based on the Coherent Output Power (COP) and a direct approach.
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Dates et versions

hal-03360710 , version 1 (01-10-2021)

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Marc C. Jacob, Gilles Robert, Nathalie Fremion, Sylvie Guerrand. In-flow acoustic measurements on high speed trains. 6th Aeroacoustics Conference and Exhibit, Jun 2000, Lahaina, United States. ⟨10.2514/6.2000-2011⟩. ⟨hal-03360710⟩
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