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Bionic shape design of electric locomotive and aerodynamic drag reduction

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Bionics has been widely used in many fields. Previous studies on the application of bionics in locomotives and vehicles mainly focused on shape optimisation of high-speed trains, but the research on bionic shape design in the electric locomotive field is rare. This study investigated a design method for streamlined electric locomotives according to the principles of bionics. The crocodiles were chosen as the bionic object because of their powerful and streamlined head shape. Firstly, geometric characteristic lines were extracted from the head of a crocodile by analysing the head features. Secondly, according to the actual size requirements of the electric locomotive head, a free-hand sketch of the bionic electric locomotive head was completed by adjusting the position and scale of the geometric characteristic lines. Finally, the non-uniform rational B-splines method was used to establish a 3D digital model of the crocodile bionic electric locomotive, and the main and auxiliary control lines were created. To verify the drag reduction effect of the crocodile bionic electric locomotive, numerical simulations of aerodynamic drag were performed for the crocodile bionic and bluff body electric locomotives at different speeds in open air by using the CFD software, ANSYS FLUENT16.0. The geometric models of crocodile bionic and bluff body electric locomotives were both marshalled with three cars, namely, locomotive + middle car + locomotive, and the size of the two geometric models was uniform. Dimensions and grids of the flow field were defined. And then, according to the principle of motion relativity, boundary conditions of flow field were defined. The results indicated that the crocodile bionic electric locomotive demonstrated a good aerodynamic performance. At the six sampling speeds in the range of 40–240 km/h, the aerodynamic drag coefficient of the crocodile bionic electric locomotive decreased by 7.7% on the average compared with that of the bluff body electric locomotive.
Rocznik
Strony
99--109
Opis fizyczny
Bibliogr. 22 poz., rys., tab., wzory
Twórcy
autor
  • School of Mechanical and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, China
autor
  • School of Mechanical and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, China
autor
  • School of Mechanical and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, China
autor
  • School of Mechanical and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, China
Bibliografia
  • [1] BAKER, C. J., 2010. The flow around high speed trains. Journal of Wind Engineering and Industrial Aerodynamics, 98(6/7), 266-298.
  • [2] BELL, J. R., BURTON, D., THOMPSON, M. C., et al., 2015. Moving model analysis of the slipstream and wake of a high-speed train. Journal of Wind Engineering and Industrial Aerodynamics, 2015(136), 127-137.
  • [3] DU, J., GONG, M., TIAN, A., et al., 2014. Study on the drag reduction of the high-speed train based on the bionic non-smooth riblets. Journal of Railway Science and Engineering, 11(5), 70-76.
  • [4] JEONG, S. M., LEE, S. A., RHO, J. H., et al., 2015. Research of high-speed train pantograph shape design for noise and drag reduction through computational analysis. Journal of Fluids Engineering, 20(2), 67-72.
  • [5] KHIER, W., BREUER, M., DURST, F., 2000. Flow structure around trains under side wind conditions: A numerical study. Computers & Fluids, 29(2), 179-195.
  • [6] LU, J. N., XU, B. C., ZHI, J. Y., et al., 2017. Image bionic design of high speed train head modeling. Journal of Machine Design, 34(9), 106-110.
  • [7] MAIER, M., SIEGEL, D., THOBEN, K., 2013. Transfer of natural micro structures to bionic lightweight design proposals. Journal of Bionic Engineering, 10 (4), 469-478.
  • [8] MINDUR, L., 2017. Development of Italian railways in the period 2002-2015, including high-speed railway lines. Scientific Journal of Silesian University of Technology. Series Transport, 96, 115-127.
  • [9] OH, H. K., KWON, H., KWAK, M., et al., 2016. Measurement and analysis for the upper side flow boundary layer of a high speed train using wind tunnel experiments with a scaled model. Journal of the Korean Society for Railway, 19(1), 11-19.
  • [10] PAZ, C., SUAREZ, E., GIL, C., 2017. Numerical methodology for evaluating the effect of sleepers in the underbody flow of a high-speed train. Journal of Wind Engineering and Industrial Aerodynamics, 2017(167), 140-147.
  • [11] SLOBODA, O., KORBA, P., HOVANEC, M., PILA, J., et al., 2016. Numerical approach in aeroelasticity. Scientific Journal of Silesian University of Technology. Series Transport, 93, 115-122.
  • [12] TIAN, H. Q., 2009. Formation mechanism of aerodynamic drag of high-speed train and some reduction measures. Journal of Central South University of Technology, 16(1), 166-171.
  • [13] TONG, J., XU, S., CHEN, D., 2017. Design of a bionic blade for vegetable chopper. Journal of Bionic Engineering, 14 (1), 163-171.
  • [14] WANG, D., ZHAO, W., MA, S., 2007. Application of CFD numerical simulation in high speed train design. Journal of the China Railway Society, 29(5), 64-68.
  • [15] WANG, J. G., CHEN, S. H., WANG, Q. J., 2014. Effect of bionic rhombic surface texture on frictional noise of high-speed train. Journal of Traffic and Transportation Engineering, 14(1), 43-48.
  • [16] WANG, Z., GAO, K., SUN, Y., 2016. Effects of bionic units in different scales on the wear behavior of bionic impregnated diamond bits. Journal of Bionic Engineering, 13 (4), 659-668.
  • [17] WU, Z., YANG, E., DING, W., 2017. Design of large-scale streamlined head cars of high-speed trains and aerodynamic drag calculation. Archives of Transport, 44(4), 89-97.
  • [18] XIAO, J. P., HUANG, Z. X., CHEN, L., 2013. Review of Aerodynamic Investigations for High Speed Train. Mechanics in Engineering, 35(2), 1-12.
  • [19] YI, Q., MAO, R. X., ZHANG, S., 2012. Applications of bionic shaping design in industrial design of railway vehicles. Electric Locomotives & Mass Transit Vehicles, 35(3), 58-62.
  • [20] YUAN, F., YUAN, E., IGNAT, M., ARDELEAN, I., 2017. A bionic study of the magnetic bacteria with applications to the mecanomagnetic micromanipulators. Procedia Engineering, 174,1128-1139.
  • [21] ZHANG, J., LI, J., TIAN, H., et al., 2016. Impact of ground and wheel boundary conditions on numerical simulation of the high-speed train aerodynamic performance. Journal of Fluids and Structures, 2016(61), 249-261.
  • [22] ZHOU, L. C., DAI, R., CHEN, X., 2014. The Application of Bionics Design in the Design of Chinese High Speed Train. Design, 2014(17), 57-58.
Uwagi
PL
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-39d42974-65c5-4d43-a056-39be2a69df47
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