DOI QR코드

DOI QR Code

Modelling the multi-physics of wind-blown sand impacts on high-speed train

  • Zhang, Yani (National Innovation Centre of High-speed Train) ;
  • Jiang, Chen (Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University) ;
  • Zhan, Xuhe (National Innovation Centre of High-speed Train)
  • 투고 : 2020.07.21
  • 심사 : 2021.04.26
  • 발행 : 2021.05.25

초록

The wind-blown sand effect on the high-speed train is investigated. Unsteady RANS equation and the SST k-ω turbulent model coupled with the discrete phase model (DPM) are utilized to simulate the two-phase of air-sand. Sand impact force is calculated based on the Hertzian impact theory. The different cases, including various wind velocity, train speed, sand particle diameter, were simulated. The train's flow field characteristics and the sand impact force were analyzed. The results show that the sand environment makes the pressure increase under different wind velocity and train speed situations. Sand impact force increases with the increasing train speed and sand particle diameter under the same particle mass flow rate. The train aerodynamic force connected with sand impact force when the train running in the wind-sand environment were compared with the aerodynamic force when the train running in the pure wind environment. The results show that the head car longitudinal force increase with wind speed increasing. When the crosswind speed is larger than 35m/s, the effect of the wind- sand environment on the train increases obviously. The longitudinal force of head car increases 23% and lateral force of tail increases 12% comparing to the pure wind environment. The sand concentration in air is the most important factor which influences the sand impact force on the train.

키워드

과제정보

Authors appreciate the supports from, National Key Research and Development Program of China (Grant No.2020YFA0710901), National Natural Science Foundation of China (Grant No. 1202395), Science Foundation of Hunan Province (Grant No. 2019JJ50790), and Start-up funding of Central South University of China.

참고문헌

  1. Aa, A., Mm, A., Sj, A., Oyb, C., Aa, A. and Ma, A. (2020), "Cfd numerical simulation of standalone sand screen erosion due to gas-sand flow", J. Nat. Gas Sci. Eng., 85. https://doi.org/10.1016/j.jngse.2020.103706.
  2. Anderson, J.D. (1995), Computational Fluid Dynamics: The Basics With Applications. McGraw-Hill, New York, U.S.A.
  3. Finnie, I. (1960), Erosion of Surfaces by Solid Particles[J] Wear. 3. 87-103. https://doi.org/10.1016/0043-1648(60)90055-7
  4. Hunter, S.C. (1957), "Energy absorbed by elastic waves during impact", J. Mech. Phys. Solids, 5(3), 162-171. https://doi.org/10.1016/0022-5096(57)90002-9.
  5. Jiang, F.Q., Li, Y., Li, K.C., Cheng, J.J., Xue, C.X. and Ge, S.C. (2010), "Study on structural characteristics of Gobi wind sand flow in 100 km wind area along Lan-xin railway", J. China Railway Soc., 3. https://doi.org/10.3969/j.issn.1001-8360.2010.03.019
  6. Ke, S.T., Dong, Y.F., Zhu, R.K. and Wang, T.G. (2020), "Wind-sand coupling movement induced by strong typhoon and its influences on aerodynamic force distribution of the wind turbine", Wind Struct., 30(4), 433-450. https://doi.org/10.12989/was.2020.30.4.433.
  7. Khan, R., Ya, H.H., Pao, W., Abdullah, M. and Dzubir, F.A. (2020), "Influence of sand fines transport velocity on erosion-corrosion phenomena of carbon steel 90-degree elbow", Metals -Open Access Metallurgy J., 10(5), 626. https://doi.org/10.3390/met10050626.
  8. Liu, T.H. and Zhang, J. (2013), "Effect of landform on aerodynamic performance of high-speed trains in cutting under cross wind", J. Central South Univ., 20(3), 830-836. https://doi.org/10.1007/s11771-013-1554-3
  9. McLaskeya, G.C. and Glaser, S.D. (2010), "Hertzian impact: Experimental study of the force pulse and resulting stress waves", J. Acoustic. Soc. Amer., 128(3), 1087-1096. https://doi.org/10.1121/1.3466847.
  10. Moris, S.A. and Alexander, A.J. (1972), "An investigation of particle trajectories in two-phase flow systems", J. Fluid Mech., 55(2), 193-208. https://doi.org/10.1017/S0022112072001806.
  11. Niu, J., Liang, X. and Zhou, D. (2016), "Experimental study on the effect of Reynolds number on aerodynamic performance of high-speed train with and without yaw angle", J. Wind Eng. Ind. Aerod., 157, 36-46. https://doi.org/10.1016/j.jweia.2016.08.007.
  12. Niu, J., Zhou, D. and Wang, Y. (2018), "Numerical comparison of aerodynamic performance of stationary and moving trains with or without windbreak wall under crosswind", J. Wind Eng. Ind. Aerod., 182, 1-15. https://doi.org/10.1016/j.jweia.2018.09.011.
  13. Paz, C., Suarez, E., Gil, C. and Concheiro, M. (2015), "Numerical study of the impact of windblown sand particles on a high-speed train", J. Wind Eng. Ind. Aerod., 145, 87-93. https://doi.org/10.1016/j.jweia.2015.06.008.
  14. Sarafrazi, V. and Talaee, M.R. (2019), "Numerical simulation of sand transfer in wind storm using the eulerian-lagrangian two-phase flow model", Europ. Phys. J. E., 42(4), https://doi.org/10.1140/epje/i2019-11809-8.
  15. Smyth, T.A. (2016), "A review of computational fluid dynamics (cfd) airflow modelling over aeolian landforms", Aeolian Res., 22, 153-164. https://doi.org/10.1016/j.aeolia.2016.07.003.
  16. Wang, T.T., Jiang, C.W., Gao, Z.X. and Lee, C.H. (2017), "Numerical simulation of sand load applied on high-speed train in sand environment", J. Central South Univ., 24(2), 442-447. https://doi.org/10.1007/s11771-017-3446-4.
  17. Xin, L.G., Cheng, J.J., Chen, B.Y. and Weng, R. (2018), "The motion rule of sand particles under control of the sand transportation engineering", Wind Struct., 27(4), 213-221. https://doi.org/10.12989/was.2018.27.4.213.
  18. Xiong, H.B., Yu, W.G., Chen, D.W. and Shao, X.M. (2011), "Numerical study on the aerodynamic performance and safe running of high-speed trains in sandstorms", J. Zhejiang Univ. Sci. A, 12(12), 971-978. https://doi.org/10.1631/jzus.A11GT005.