- Tytuł:
- Prediction and validation for the aerodynamic noise of high-speed train power car
- Autorzy:
-
Jiang, S.
Yang, S.
Wu, D.
Wen, B-Ch. - Powiązania:
- https://bibliotekanauki.pl/articles/375504.pdf
- Data publikacji:
- 2018
- Wydawca:
- Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
- Tematy:
-
aerodynamic noise
high-speed train
Lighthill-Curle theory
simulation model
online test
hałas aerodynamiczny
pociąg ekspresowy
teoria Lighthilla-Curle
model symulacyjny
test online - Opis:
- 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.
- Źródło:
-
Transport Problems; 2018, 13, 2; 91-102
1896-0596
2300-861X - Pojawia się w:
- Transport Problems
- Dostawca treści:
- Biblioteka Nauki
Artykuł