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The Effect of Bogie Positions on the Aerodynamic Behavior of a High-Speed Train: An IDDES Study

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Abstract

In this study, an improved delayed detached-eddy simulation method has been used to investigate the aerodynamic behavior of the CRH2 high-speed trains (HST) with different first and last bogie positions. The results of the numerical simulations have been validated against experimental data obtained from a previous wind tunnel test, a full-scale field test and a reduced-scale moving model test. The results of the flow prediction are used to explore the effects of the bogie positions on the slipstream, wake flow, underbody flow and aerodynamic drag. Compared with the original HST model, the downstream movement of the first bogie, has a great effect on decreasing the slipstream velocity and pressure fluctuation aside the HST, especially around the lower part of the HST. Furthermore, the size of the longitudinal vortex structure and slipstream velocity in the near wake region also decrease significantly by moving the last bogie upstream. Additionally, the movement of the first and last bogies toward the HST center, effectively decreases the drag values of the head and tail car, while a lower effect is observed on the intermediate cars.

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Acknowledgements

The authors acknowledge the computing resources provided by the High-speed Train Research Center of Central South University, China.

Funding

This work was accomplished by the supports of the National Key Research and Development Program of China [Grant No. 2017YFB1201304], the Hunan Provincial Innovation Foundation for Postgraduates [Grant No. 150110003], the National Science Fund Foundation of China [Grant Nos. 51605044 and U1534210].

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Authors and Affiliations

  1. Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha, 410075, China

    Jiabin Wang, Jie Zhang, Tiantian Wang & Guangjun Gao

  2. National and Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Changsha, 410075, China

    Jiabin Wang, Jie Zhang, Tiantian Wang & Guangjun Gao

  3. Department of Mechanics and Maritime Sciences, Chalmers University of Technology, 41296, Gothenburg, Sweden

    Guglielmo Minelli & Sinisa Krajnović

  4. College of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha, 410076, China

    Xiujuan Miao

Authors
  1. Jiabin Wang
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  2. Guglielmo Minelli
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  3. Xiujuan Miao
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  4. Jie Zhang
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  5. Tiantian Wang
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  6. Guangjun Gao
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  7. Sinisa Krajnović
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Contributions

JW: Data curation, Formal analysis, Writing—original draft. GM: Supervision, Writing—review & editing. XM: Investigation, Visualization. JZ: Methodology, Validation. TW: Writing—review & editing. GG: Project administration, Funding acquisition. SK: Resources, Software, Writing—review & editing.

Corresponding author

Correspondence to Guangjun Gao.

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We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled, “The effect of bogie positions on the aerodynamic behavior of a high-speed train. An IDDES study”.

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Wang, J., Minelli, G., Miao, X. et al. The Effect of Bogie Positions on the Aerodynamic Behavior of a High-Speed Train: An IDDES Study. Flow Turbulence Combust 107, 257–282 (2021). https://doi.org/10.1007/s10494-020-00236-9

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  • DOI: https://doi.org/10.1007/s10494-020-00236-9

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