Abstract
Solar road vehicles have very specific design requirements. This makes their aerodynamic characteristics quite different from classic sedan vehicles. In the present study, the computational model of a typical solar road vehicle was developed to investigate its aerodynamic forces and flow characteristics. Computations were performed assuming the steady viscous flow and using the Reynolds-averaged Navier Stokes equations along with the k-ω turbulence model. The obtained results indicate some important findings that are commonly not present for classic sedan vehicles. In particular, a contribution of the viscous drag force to the overall drag force is considerably larger (41 %) than it is the case for the standard passenger road vehicles, where the form drag force dominates over the viscous drag force. Surface pressure distribution patterns indicate a favorable aerodynamic design of this vehicle. In particular, larger pressure coefficients on the top of the vehicle body as compared to the bottom surface contribute to increasing a downforce and thus the vehicle traction. The airfoil-shaped crosssection of the designed cockpit canopy has favorable properties with respect to reduction of the aerodynamic drag force.
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References
Amann, C. A. (1994). Private vehicles for personal transportation. Int. J. Vehicle Design 14, 5–6, 399−430.
Bakker, A. (2006). Applied Computational Fluid Dynamics. Lecture 11–Boundary Layers and Separation.
Barros, D., Borée, J., Noack, B. R., Spohn, A. and Ruiz, T. (2016). Bluff body drag manipulation using pulsed jets and Coanda effect. J. Fluid Mechanics, 805, 422–459.
Birnie, D. P. (2016). Analysis of energy capture by vehicle solar roofs in conjunction with workplace plug-in charging. Solar Energy, 125, 219–226.
Buljac, A., Džijan, I., Korade, I., Krizmanić, S. and Kozmar, H. (2016). Automobile aerodynamics influenced by airfoil-shaped rear wing. Int. J. Automotive Technology 17, 3, 377–385.
Cadot, O., Courbois, A., Ricot, D., Ruiz, T., Harambat, F. and Herbert, V. (2016). Characterisations of force and pressure fluctuations of real vehicles. Int. J. Engineering Systems Modelling and Simulation 8, 2, 99–105.
Doig, G. and Beves, C. (2014). Aerodynamic design and development of the Sunswift IV solar racing car. Int. J. Vehicle Design 66, 2, 144–167.
Elofsson, P. and Bannister, M. (2002). Drag reduction mechanisms due to moving ground and wheel rotation in passenger cars. SAE Paper No. 2002–01-0531.
Ferziger, J. H. and Perić, M. (2002). Computational Methods for Fluid Dynamics. Spriger-Verlag Berlin Heidelberg. Heidelberg, Germany.
Gregory, N. and O’Reilly, C. L. (1970). Low-speed Aerodynamic Characteristics of NACA 0012 Aerofoil Section, Including the Effects of Upper-surface Roughness Simulating Hoar Frost. Research Council. London, UK.
Huminic, A. and Huminic, G. (2017). Aerodynamic study of a generic car model with wheels and underbody diffuser. Int. J. Automotive Technology 18, 3, 397–404.
Kang, S. O., Jun, S. O., Park, H. I., Song, K. S., Kee, J. D., Kim, K. H. and Lee, D. H. (2012). Actively translating a rear diffuser device for the aerodynamic drag reduction of a passenger car. Int. J. Automotive Technology 13, 4, 583–592.
Katz, J. (1996). Race Car Aerodynamics. Bentley Publishers. Cambridge, UK.
Khaled, M., El Hage, H., Harambat, F. and Peerhossaini, H. (2012). Some innovative concepts for car drag reduction: A parametric analysis of aerodynamic forces on a simplified body. J. Wind Engineering and Industrial Aerodynamics, 107–108, 36−47.
McBeath, S. (2011). Competition Car Aerodynamics. Haynes Publishing. Bristol, UK.
McNally, J., Fernandez, E., Robertson, G., Kumar, R., Taira, K., Alvi, F., Yamaguchi, Y. and Murayama, K. (2015). Drag reduction on a flat-back ground vehicle with active flow control. J. Wind Engineering and Industrial Aerodynamics, 145, 292–303.
Menter, F. R. (1994). Two-equation eddy-viscosity turbulence models for engineering applications. AIAA Journal 32, 8, 1598–1605.
Rao, G. S., Rao, G. K., Murthy, G. R. K. and Obulesh, Y. (2009). Power management policies and control of hybrid electric vehicle. Int. J. Renewable Energy Technology 1, 1, 101–113.
Saber, A. Y. and Venayagamoorthy, G. K. (2011). Plug-in vehicles and renewable energy sources for cost and emission reductions. IEEE Trans. Industrial Electronics 58, 4, 1229–1238.
Salim, S. M. and Cheah, S. C. (2009). Wall y+ strategy for dealing with wall-bounded turbulent flows. Proc. Int. MultiConf. Engineerings and Computer Science, Hong Kong.
Sharma, D., Gaur, P. and Mittal, A. P. (2013). Energy management system for a PV assisted conventional vehicle. Int. J. Energy Technology and Policy 9, 2, 144–159.
Song, K. S., Kang, S. O., Jun, S. O., Park, H. I., Kee, J. D., Kim, K. H. and Lee, D. H. (2012). Aerodynamic design optimization of rear body shapes of a sedan for drag reduction. Int. J. Automotive Technology 13, 6, 905–914.
Taha, Z., Passarella, R., Sugiyono, Nasrudin, A. R., Jamali, M. S. and Aznijar, A. Y. (2011). CFD analysis for Merdeka 2 solar vehicle. Advanced Science Letters 4, 8–10, 2807−2811.
Vinnichenko, N. S., Uvarov, A. V., Znamenskaya, I. A., Herchang, A. Y. and Wang, T. (2014). Solar car aerodynamic design for optimal cooling and high efficiency. Solar Energy, 103, 183–190.
West, G. S. and Apelt, C. J. (1982). The effects of tunnel blockage and aspect ratio on the mean flow past a circular cylinder with Reynolds numbers between 104 and 105. J. Fluid Mechanics, 114, 361–377.
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Majdandžić, L., Buljić, D., Buljac, A. et al. Aerodynamic Design of a Solar Road Vehicle. Int.J Automot. Technol. 19, 949–957 (2018). https://doi.org/10.1007/s12239-018-0092-2
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DOI: https://doi.org/10.1007/s12239-018-0092-2