Investigating the Effect of Clearance Distance between the Floor of a High-speed Train and Ground on Aerodynamic Forces in Presence of Side Wind

Document Type : Original Article

Authors

1 Department of Mechanical Engineering, Sahand University of Technology, Tabriz, Iran

2 University of Electronic Science and Technology of China, Chengdu, 610054, Sichuan, PR China

Abstract

The main objective of this paper was to propose the real model of the high speed train regarding the side wind disturbance. In the first part of this article, the turbulent air flow around a simplified design of a high-speed vehicle was numerically analyzed using finite volume method and four RANS turbulence models, including k-ω SST, k-ε RNG, Spalart-Almaras, and Launder and Sharma. The results of numerical simulations regarding the wall function were validated by experimental works and it was shown that in the area near the wall, the SST k-ω model had the best simulation for the horizontal component of the velocity (21% error). The results of the lift coefficients showed that at short distances from the train floor to the ground due to relatively strong wind with angles less than 0.2 radians, the lift coefficient was negative and as a result, the forces acting on the train were downward. Finally it was shown that by increasing the wind angle, this coefficient gradually becomes positive, which can disrupt the stability of the train. It can be concluded that in trains whose floor to ground distance is more than 0.136 of the train height, the balance is maintained only in the absence of side wind.

Keywords

Main Subjects

References

  1. Krajnović, S., "Shape optimization of high-speed trains for improved aerodynamic performance", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, Vol. 223, No. 5, (2009), 439-452. https://doi.org/10.1243/09544097JRRT25
  2. Webber, J., Mehbodniya, A., Teng, R., Arafa, A. and Alwakeel, A., "Finger-gesture recognition for visible light communication systems using machine learning", Applied Sciences, Vol. 11, No. 24, (2021), 11582. https://doi.org/10.3390/app112411582
  3. Baker, C.J., Quinn, A., Sima, M., Hoefener, L. and Licciardello, R., "Full-scale measurement and analysis of train slipstreams and wakes. Part 1: Ensemble averages", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, Vol. 228, No. 5, (2014), 451-467. https://doi.org/10.1177/0954409713485944
  4. Zhang, L., Yang, M.-z. and Liang, X.-f., "Experimental study on the effect of wind angles on pressure distribution of train streamlined zone and train aerodynamic forces", Journal of Wind Engineering and Industrial Aerodynamics, Vol. 174, (2018), 330-343. https://doi.org/10.1016/j.jweia.2018.01.024
  5. Adamu, A., Zhang, J., Gidado, F. and Wang, F., "An investigation of influence of windshield configuration and train length on high-speed train aerodynamic performance", Journal of Applied Fluid Mechanics, Vol. 16, No. 2, (2022), 337-352. doi: 10.47176/jafm.16.02.1433.
  6. Kargar, F., Mehdipour, R. and Baniamerian, Z., "A numerical investigation on aerodynamic coefficients of solar troughs considering terrain effects and vortex shedding", International Journal of Engineering, Transactions C: Aspects, Vol. 28, No. 6, (2015), 940-948. doi: 10.5829/idosi.ije.2015.28.06c.15.
  7. Assadi, A. and Najaf, H., "Nonlinear static bending of single-crystalline circular nanoplates with cubic material anisotropy", Archive of Applied Mechanics, Vol. 90, No. 4, (2020), 847-868. https://doi.org/10.1007/s00419-019-01643-9
  8. Najafi, M.L. and Nasiri, M., "Identification and prioritizing the effective factors on addiction by use of fuzzy analytical hierarchy process (f-AHP)", Life Science Journal, Vol. 10, No. 9s, (2013).
  9. Chen, Z., Liu, T., Zhou, X. and Niu, J., "Impact of ambient wind on aerodynamic performance when two trains intersect inside a tunnel", Journal of Wind Engineering and Industrial Aerodynamics, Vol. 169, (2017), 139-155.
  10. Rocchi, D., Tomasini, G., Schito, P. and Somaschini, C., "Wind effects induced by high speed train pass-by in open air", Journal of Wind Engineering and Industrial Aerodynamics, Vol. 173, (2018), 279-288. https://doi.org/10.1016/j.jweia.2017.10.020
  11. Khosravian, E. and Maghsoudi, H., "Design of an intelligent controller for station keeping, attitude control, and path tracking of a quadrotor using recursive neural networks", International Journal of Engineering, Transactions B: Applications, Vol. 32, No. 5, (2019), 747-758. doi: 10.5829/ije.2019.32.05b.17.
  12. Assadi, A., Najaf, H. and Nazemizadeh, M., "Size-dependent vibration of single-crystalline rectangular nanoplates with cubic anisotropy considering surface stress and nonlocal elasticity effects", Thin-Walled Structures, Vol. 170, (2022), 108518. https://doi.org/10.1016/j.tws.2021.108518
  13. Paz, C., Suárez, E. and Gil, C., "Numerical methodology for evaluating the effect of sleepers in the underbody flow of a high-speed train", Journal of Wind Engineering and Industrial Aerodynamics, Vol. 167, (2017), 140-147. https://doi.org/10.1016/j.jweia.2017.04.017
  14. Zhang, J., Li, J.-j., Tian, H.-q., Gao, G.-j. and Sheridan, J., "Impact of ground and wheel boundary conditions on numerical simulation of the high-speed train aerodynamic performance", Journal of Fluids and Structures, Vol. 61, No., (2016), 249-261. doi. https://doi.org/10.1016/j.jfluidstructs.2015.10.006
  15. Xia, C., Shan, X. and Yang, Z., "Comparison of different ground simulation systems on the flow around a high-speed train", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, Vol. 231, No. 2, (2017), 135-147. https://doi.org/10.1177/0954409715626191
  16. Wang, S., Burton, D., Herbst, A., Sheridan, J. and Thompson, M.C., "The effect of bogies on high-speed train slipstream and wake", Journal of Fluids and Structures, Vol. 83, (2018), 471-489. https://doi.org/10.1016/j.jfluidstructs.2018.03.013
  17. Wang, S., Burton, D., Herbst, A.H., Sheridan, J. and Thompson, M.C., "The effect of the ground condition on high-speed train slipstream", Journal of Wind Engineering and Industrial Aerodynamics, Vol. 172, (2018), 230-243. https://doi.org/10.1016/j.jweia.2017.11.009
  18. Xia, C., Wang, H., Shan, X., Yang, Z. and Li, Q., "Effects of ground configurations on the slipstream and near wake of a high-speed train", Journal of Wind Engineering and Industrial Aerodynamics, Vol. 168, (2017), 177-189. https://doi.org/10.1016/j.jweia.2017.06.005
  19. Hajipour Khire Masjidi, B., Bahmani, S., Sharifi, F., Peivandi, M., Khosravani, M. and Hussein Mohammed, A., "Ct-ml: Diagnosis of breast cancer based on ultrasound images and time-dependent feature extraction methods using contourlet transformation and machine learning", Computational Intelligence and Neuroscience, Vol. 2022, (2022). doi: 10.1155/2022/1493847.
  20. Yu, E., Jin, Y., Xu, G., Han, Y. and Li, Y., "Aerodynamic stability of typical sea-crossing bridge with streamlined box girder under wave-interfered complex wind fields", Journal of Wind Engineering and Industrial Aerodynamics, Vol. 228, (2022), 105101. https://doi.org/10.1016/j.jweia.2022.105101
  21. Ismaiel, A., "Wind turbine blade dynamics simulation under the effect of atmospheric turbulence", Emerging Science Journal, Vol. 7, No. 1, (2022), 162-176. doi: 10.28991/ESJ-2023-07-01-012.
  22. Zvolenský, P., Grenčík, J., Pultznerová, A. and Kašiar, Ľ., "Research of noise emission sources in railway transport and effective ways of their reduction", in MATEC Web of Conferences, EDP Sciences. Vol. 107, (2017), 00073.
  23. Dong, T., Minelli, G., Wang, J., Liang, X. and Krajnović, S., "The effect of ground clearance on the aerodynamics of a generic high-speed train", Journal of Fluids and Structures, Vol. 95, (2020), 102990. https://doi.org/10.1016/j.jfluidstructs.2020.102990
  24. Kalitzin, G., Medic, G., Iaccarino, G. and Durbin, P., "Near-wall behavior of rans turbulence models and implications for wall functions", Journal of Computational Physics, Vol. 204, No. 1, (2005), 265-291. https://doi.org/10.1016/j.jcp.2004.10.018
  25. Mahzoon, M.M. and Kharati-Koopaee, M., "The effect of gurney flap and trailing-edge wedge on the aerodynamic behavior of an axial turbine blade", HighTech and Innovation Journal, Vol. 2, No. 4, (2021), 293-305. doi: 10.28991/HIJ-2021-02-04-03.
International Journal of Engineering
Volume 36, Issue 4
TRANSACTIONS A: Basics
April 2023
Pages 604-614

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