The Numerical Simulation of Aerodynamic Noise Generated by CRH3 Train’s Head Surface
ABSTRACT
In order to solve the increasingly serious problem of railway noise which caused by the train’s speed-up, especially the problem of the dominant aerodynamic noise of the high-speed train, it’s necessary to have a numerical simulation analysis for the CRH3 train’s three dimensional flow model. Setting monitoring points in the positions that the surface curvature changes significantly, using the Large Eddy Simulation Method (LES) to have a transient simulation for the CRH3 train which is in the speed of 300 km/h and 350 km/h, applying the acoustics theory of Lighthill-Curle to predict the aerodynamic noise caused by the head of the CRH3 train. The generation and distribution of the train’s aerodynamic noise are analyzed, so as to provide some reasonable suggestions for the design of the train body.
In order to solve the increasingly serious problem of railway noise which caused by the train’s speed-up, especially the problem of the dominant aerodynamic noise of the high-speed train, it’s necessary to have a numerical simulation analysis for the CRH3 train’s three dimensional flow model. Setting monitoring points in the positions that the surface curvature changes significantly, using the Large Eddy Simulation Method (LES) to have a transient simulation for the CRH3 train which is in the speed of 300 km/h and 350 km/h, applying the acoustics theory of Lighthill-Curle to predict the aerodynamic noise caused by the head of the CRH3 train. The generation and distribution of the train’s aerodynamic noise are analyzed, so as to provide some reasonable suggestions for the design of the train body.
KEYWORDS
Aerodynamic Noise, Three Dimensional Flow Mode, Monitoring Points, Large Eddy Simulation (LES), Lighthill-Curle
Aerodynamic Noise, Three Dimensional Flow Mode, Monitoring Points, Large Eddy Simulation (LES), Lighthill-Curle
Cite this paper
Kong, F. and Wang, J. (2015) The Numerical Simulation of Aerodynamic Noise Generated by CRH3 Train’s Head Surface. Open Journal of Applied Sciences, 5, 501-508. doi: 10.4236/ojapps.2015.58049.
Kong, F. and Wang, J. (2015) The Numerical Simulation of Aerodynamic Noise Generated by CRH3 Train’s Head Surface. Open Journal of Applied Sciences, 5, 501-508. doi: 10.4236/ojapps.2015.58049.
References
[1] Sassa, T., Sato, T. and Yatsui, S. (2001) Numerical Analysis of Aerodynamic Noise Radiation from a High-Speed Train Surface. Journal of Sound and Vibration, 247, 407-416.
http://dx.doi.org/10.1006/jsvi.2001.3773 [2] Holmes, B. and Dias, J. (1997) Predicting the Wind Noise from the Pantograph Cover of a Train. International Journal for Numerical Methods in Fluids, 24, 1307-1319.
http://dx.doi.org/10.1002/(SICI)1097-0363(199706)24:12<1307::AID-FLD561>3.0.CO;2-8 [3] Keda, M., Suzuki, M. and Yoshida, K. (2006) Study on Optimization of Panhead Shape Possessing Low Noise and Stable Aerodynamic Characteristics. Quarterly Report of Railway Technical Research Institute, 47, 72-77. [4] Iwamoto, K. and Higashi, A. (1993) Some Consideration toward Reducing Aerodynamic Noise on Pantograph. Japanese Railway Engineering, 122, 1-4. [5] Peng L.J. and Shen Y.G. (2011) Numerical Analysis of Fluctuating Pressure of High Speed Vehicle. Machinery Design and Manufacture, 10, 176-178. [6] Kitagawa, T. and Nagakura, K. (2000) Aerodynamic Noise Generated by Shinkansen Cars. Journal of Sound and Vibration, 231, 913-924. http://dx.doi.org/10.1006/jsvi.1999.2639 [7] Fremion, N., Vincent, N. and Jacob, M. (2000) Aerodynamic Noise Radiated by the Intercoach Spacing and the Bogie of a High-Speed Train. Journal of Sound and Vibration, 231, 577-593.
http://dx.doi.org/10.1006/jsvi.1999.2546 [8] Huang, Y.Y. (2012) Numerical Simulation of Aerodynamic Noise for EMU. Master Thesis, Dalian Jiaotong University, Dalian. [9] Xiao, Y.G. and Kang, Z.C. (2008) Numerical Prediction of Aerodynamic Noise Radiated from High Speed Train Head Surface. Journal of Central South University (Science and Technology), 39, 1267-1272.
[1] Sassa, T., Sato, T. and Yatsui, S. (2001) Numerical Analysis of Aerodynamic Noise Radiation from a High-Speed Train Surface. Journal of Sound and Vibration, 247, 407-416.
http://dx.doi.org/10.1006/jsvi.2001.3773 [2] Holmes, B. and Dias, J. (1997) Predicting the Wind Noise from the Pantograph Cover of a Train. International Journal for Numerical Methods in Fluids, 24, 1307-1319.
http://dx.doi.org/10.1002/(SICI)1097-0363(199706)24:12<1307::AID-FLD561>3.0.CO;2-8 [3] Keda, M., Suzuki, M. and Yoshida, K. (2006) Study on Optimization of Panhead Shape Possessing Low Noise and Stable Aerodynamic Characteristics. Quarterly Report of Railway Technical Research Institute, 47, 72-77. [4] Iwamoto, K. and Higashi, A. (1993) Some Consideration toward Reducing Aerodynamic Noise on Pantograph. Japanese Railway Engineering, 122, 1-4. [5] Peng L.J. and Shen Y.G. (2011) Numerical Analysis of Fluctuating Pressure of High Speed Vehicle. Machinery Design and Manufacture, 10, 176-178. [6] Kitagawa, T. and Nagakura, K. (2000) Aerodynamic Noise Generated by Shinkansen Cars. Journal of Sound and Vibration, 231, 913-924. http://dx.doi.org/10.1006/jsvi.1999.2639 [7] Fremion, N., Vincent, N. and Jacob, M. (2000) Aerodynamic Noise Radiated by the Intercoach Spacing and the Bogie of a High-Speed Train. Journal of Sound and Vibration, 231, 577-593.
http://dx.doi.org/10.1006/jsvi.1999.2546 [8] Huang, Y.Y. (2012) Numerical Simulation of Aerodynamic Noise for EMU. Master Thesis, Dalian Jiaotong University, Dalian. [9] Xiao, Y.G. and Kang, Z.C. (2008) Numerical Prediction of Aerodynamic Noise Radiated from High Speed Train Head Surface. Journal of Central South University (Science and Technology), 39, 1267-1272.