Numerical investigating of using the air duct and body side curvature effects on the Tara aerodynamic performance

Authors

1 Department of Mechanical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

2 Prof., Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

Abstract

In the transportation industry, the vehicles aerodynamics is important because it affects on fuel consumption and stability of cars. In this numerical research by using Ansys Fluent software, the aerodynamic performance of the Iranian car Tara was investigated by creating an air duct with different dimensions and geometries in the modification of front aerodynamics and the modification of rear aerodynamics. The purpose of these changes was to establish air flow between areas of the body that have a high pressure difference, which in both aerodynamic developments reduced drag force and lift force. Also, the effect of creating side curvature on the body was also studied. The results showed that design and direction of the air flow from the sides to the back of the car is very important in aerodynamics forces, however, drag force was reduced in all cases. Finally, the best methods were combined simultaneously on the car. In the most optimal model, through the combination of the the front aerodynamic modifications and rear aerodynamic modifications the drag coefficient and lift coefficient reduced 16.3% and 4.1% respectively as the drag coefficients reduced from 0.332 to 0.278.

Keywords

References

[1] پسندیده­فرد م، حسینی­کیا م (1384) بررسی نیروهای آئرودینامیک وارد بر بدنه خودرو سمند، سیزدهمین کنفرانس سالانه مهندسی مکانیک، دانشگاه صنعتی اصفهان، اصفهان، ایران.
[2] Choi W (2015) Study on Ultra-Low Aerodynamic Drag Vehicle through Optimization of Rear Shape and Aerodynamic Drag Reduction Devices. Master’s Degree Thesis, Seoul National University, South Korea.
[3] بهروان ر، مهدی م (1397) بررسی عددی اثرات ترکیبی اسپویلر عقب و و انحنای سطوح جانبی بر نیروی برآ و پسای وارد بر خودروی سدان، ماهنامه علمی پژوهشی مهندسی مکانیک مدرس (2)18: 313-305.
[4] خوشنویس ع، دانش­پژوه و، امینی ح (1393) بررسی تجربی تاثیرات زبری بر پروفیل سرعت و پسای خودروی سمند، بیست و دومین همایش سالانه بین­المللی مهندسی مکانیک، دانشگاه شهید چمران، اهواز، ایران.
[5] Sudin M, Abdullah M, Shamsuddin S, Ramli F, Tahir M (2014) Review of research on vehicles aerodynamic drag reduction methods, IJMME 14(2): 37-47.
[6] Sarkar S, Thummar K, Shah N, Vagrecha V (2019) A review paper on aerodynamic drag reduction and CFD analysis of vehicles. Proc. A Rev. Paper Aerodyn. Drag Reduction CFD Anal. Vehicles, 231-235.
[7] Huluka A, Kim C (2020) Effect of the Air Duct System of a Simplified Vehicle Model on Aerodynamic Performance, IJAME 17(2): 7985-7995.
[8] Huluka A, Kim C (2021) A Numerical Analysis on Ducted Ahmed Model as a New Approach to Improve Aerodynamic Performance of Electric Vehicle, Int. J. Automot 22(2): 291-299.
[9] Ferraris A, Pinheiro H, Airale A, Carello M, Polato D (2021) City Car Drag Reduction by Means of Flow Control Devices, SAE Technical Paper, Torino Politecnico, Italy.
[10] Aktas U, Abdallah K (2017) Aerodynamics concept study of electric vehicles, Master’s Thesis, Chalmers University of Technology, Sweden.
[11] Dickison M, Ghaleeh M, Milady S, Wen L, Qubeissi M (2020) Investigation into the aerodynamic performance of a concept sports car, JAFM 13(2): 583-601.
[12] Nie B, Zhou Q, Xia Y, Tang J (2014) Influence of feature lines of vehicle hood styling on headform kinematics and injury evaluation in car-to-pedestrian impact simulations. SAE Int. J. Transp. Saf 2(1): 182-189.
[13] Varney M, Passmore M, Gaylard A (2017) The effect of passive base ventilation on the aerodynamic drag of a generic SUV vehicle, SAE SAE Int. J. Passeng 10: 345-357.
[14] حیدری­نژاد ق (1398) مقدمه­ای بر توربولانس، انتشارات دانشگاه تربیت مدرس، چاپ سوم: 212-171.
[15] Meile W, Brenn G, Reppenhagen A, Lechner B, & Fuchs A (2011) Experiments and numerical simulations on the aerodynamics of the Ahmed body, CFD letters, 3(1): 32-39.
[16] Franck G, Nigro N, Storti M, D'elia J (2009) Numerical simulation of the flow around the Ahmed vehicle model, Latin American applied research, 39(4):295-306.
[17] گروه صنعتی ایران خودرو (1400) دفترچه راهنمای خودرو تارا: 142-
Journal of Solid and Fluid Mechanics
Volume 13, Issue 1
March and April 2023
Pages 71-86

Files

Share

How to cite

Statistics