PREDICTION AND VALIDATION FOR THE AERODYNAMIC NOISE OF HIGH-SPEED TRAIN POWER CAR

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Transport Problems

Silesian University of Technology

Subject: Economics , Transportation , Transportation Science & Technology

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VOLUME 13 , ISSUE 2 (June 2018) > List of articles

PREDICTION AND VALIDATION FOR THE AERODYNAMIC NOISE OF HIGH-SPEED TRAIN POWER CAR

Shi-jie Jiang * / Song Yang / Dan Wu / Bang-Chun Wen

Keywords : aerodynamic noise, high-speed train, Lighthill-Curle theory, simulation model,  on-line tests

Citation Information : Transport Problems. Volume 13, Issue 2, Pages 91-102, DOI: https://doi.org/10.20858/tp.2018.13.2.9

License : (CC BY 4.0)

Published Online: 31-July-2018

ARTICLE

ABSTRACT

The aerodynamic noise of high-speed train power car was investigated in this article. The full-scale power car was first modeled, and the external steady flow field was computed by a realizable k-ε turbulence model. The aerodynamic noise sources of the power car surface and the external transient flow field were then calculated by broadband noise source model and large eddy simulation (LES) model, respectively. The static pressures on the train surface were obtained from the results of the transient model. Considering the transient flow field, the far-field aerodynamic noise generated by the power car was finally derived from Lighthill-Curle theory. It was validated by means of on-line tests that have been performed along a real high-speed railway line. Through comparisons between simulations and measurements, it is shown that the simulation model gives reliable aerodynamic noise predictions. We foresee numerous applications for modeling and control of the aerodynamic noise in train.

 

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