We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
PREDICTION AND VALIDATION FOR THE AERODYNAMIC NOISE OF HIGH-SPEED TRAIN POWER CAR.
- Authors
Shi-jie JIANG; Song YANG; Dan WU; Bang-Chun WEN
- 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 high-speed train.
- Subjects
AERODYNAMIC noise; TURBULENCE; LARGE eddy simulation models; UNSTEADY flow (Aerodynamics); SPEED of railroad trains
- Publication
Transport Problems: an International Scientific Journal, 2018, Vol 13, Issue 2, p91
- ISSN
1896-0596
- Publication type
Article
- DOI
10.20858/tp.2018.13.2.9