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The key role of modern aerodynamic trends in increasing the energy efficiency of high-speed vehicles

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Based on the analysis of typical operating modes of modern high-speed trains and transport aircraft, the influence of various schemes of surface relief modification and blowing through it on aerodynamic drag has been thoroughly investigated. A set of several schemes of the combined effect of these two factors is proposed to create an easy-to-use, cheap-to-produce streamlined surface of the desired structure with a reliable and controllable effect of active influence on aerodynamic drag reduction. The potential effect of reducing aerodynamic drag has been verified by numerical and Particle Image Velocimetry experimental modeling. The proposed technological innovations are encouraging and relevant; by reducing energy costs, they increase the commercial and environmental attractiveness of their implementation.
Słowa kluczowe
Czasopismo
Rocznik
Strony
107--116
Opis fizyczny
Bibliogr. 10 poz.
Twórcy
  • Zhejiang Normal University, College of Engineering, 688 Yingbin Road, Zhejiang Province, Jinhua, 321004, China
  • Zhejiang Normal University, College of Engineering, 688 Yingbin Road, Zhejiang Province, Jinhua, 321004, China
  • Institute of Transport Systems and Technologies, the National Academy of Sciences of Ukraine, Pisarzhevsky 5, Dnipro, 49005, Ukraine
Bibliografia
  • 1. Schrauf, G. Status and perspectives of laminar flow. The Aeronautical Journal. 2005. Vol. 109(1102). P. 639-644. DOI: 10.1017/S000192400000097X.
  • 2. Orellano, A. & Sperling, S. Aerodynamic improvements and associated energy demand reduction of trains. In: Browand, F. & McCallen, R. (eds.) The Aerodynamics of Heavy Vehicles II Trucks, Buses and Trains. Springer. 2009. P. 219-231. DOI: 10.1007/978-3-540-85070-0_19.
  • 3. Corke, T.C. & Guezennec, Y.G. & Nagib, H.M. Modification in Drag of Turbulent Boundary Layers Resulting from Manipulation of Large-Scale Structures. NASA CR-3444. 1981. 28 p.
  • 4. Bechert, D.W. & Bruse, M. & Hage, W. & Van der Hoeven, J.G.T. & Hoppe, G. Experiments on drag-reducing surfaces and their optimization with an adjustable geometry. J. Fluid Mech. 1997. Vol. 338. P. 59-87. DOI: 10.1017/S0022112096004673.
  • 5. Hwang, D.P. A Proof of Concept Experiment for Reducing Skin Friction by Using a Micro-Blowing Technique. NASA TM 107315. 1996. 13 p. DOI: 10.2514/6.1997-546.
  • 6. Shkvar, Ye.O. & Jamea, A. & Shi-Ju, E. & Cai, J.-Ch. & Kryzhanovskyi, A.S. Effectiveness of blowing for improving the high-speed trains aerodynamics. Thermophysics & Aeromechannics. ITTF SB RAS. 2018. Vol. 25(5). P. 675-687. DOI: 10.1134/S0869864318050049.
  • 7. Van Nesselrooij, M. & Veldhuis, L.L.M. & Van Oudheusden, B.W. & Schrijer, F.F.J. Drag reduction by means of dimpled surfaces in turbulent boundary layers. Experiments in Fluids. 2016. Vol. 57. P. 142. DOI: 10.1007/s00348-016-2230-9.
  • 8. Ng, J.H. & Jaiman, R.K. & Lim, T.T. & Tay, C.M. & Khoo, B.C. Geometric Effects of Shallow Dimples in Turbulent Channel Flows at Re~180: A Vorticity Transport Perspective. Flow, Turbulence and Combustion. 2020. 40 p. DOI: 10.1007/s10494-020-00112-6.
  • 9. Spalart, P.R. & Shur, M. & Strelets, M. & Travin, A. & Paschal, K.B. & Wilkinson, S.P. Experimental and numerical study of the turbulent boundary layer over shallow dimples. International Journal of Heat and Fluid Flow. 2019. Vol. 78. No. 108438. DOI: 10.1016/j.ijheatfluidflow.2019.108438.
  • 10. Lienhart, H. & Breuer, M. & Koksoy, C. Drag reduction by dimples? - A complementary experimental/numerical investigation. International Journal of Heat and Fluid Flow. 2008. Vol. 29. P. 783-791. DOI: 10.1016/j.ijheatfluidflow.2008.02.001.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-61d1c807-fdba-4685-a43a-89378811ca1b
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