6th International Young Scientist Congress (IYSC-2020) will be Postponed to 8th and 9th May 2021 Due to COVID-19. 10th International Science Congress (ISC-2020).  International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Numerical Simulation of Aerodynamic forces acting on Passenger Vehicle While Overtaking

Author Affiliations

  • 1School of Mechanical and Building Sciences, VIT University, Vellore-632014, TN, INDIA

Res. J. Recent Sci., Volume 1, Issue (12), Pages 55-63, December,2 (2012)


External aerodynamic analysis is considerable when any solid body obstructs the flow, like on road vehicle. Generally flow is parallel to the vehicle direction and in opposite, but in some cases like on high way where, wind is blowing from sides also. It is more interesting if the vehicles are overtaking each other, because considerable transient condition is occurring. For overtaking vehicles transient condition is inevitable which has considerable effects on results. Numerical flow around the passenger car, a bluff body, is the subject of present work in both, steady state as well as transient condition. Cross wind situation will arise transient condition on high ways frequently which can affect the directional stability of the vehicle. Here 2D cross flow and axial flow steady as well as transient cross flow with dynamic mesh CFD simulation is completed using commercial package. Generally numerical analysis predicts values near to experimental value, which is in terms of time and cost saving.


  1. Wolf Henrich Hucho, Aerodynamics of Road Vehicles. SAE International, Warrendale, PA (1998)
  2. Okumura K. and Kuriyama T., Transient aerodynamic simulation in crosswind and passing an automobile, SAE Paper 970404 (1997)
  3. Gillieron P. and Noger C., Contribution to the analysis of transient aerodynamic effects acting on vehicles SAE Paper 2004-01-1311 (2004)
  4. Sims-Williams D.B., Self-excited aerodynamic unsteadiness associated with passenger cars, Ph.D. Thesis, University of Durham (2001)
  5. Corin R.J., He L. and Dominy R.G., ‘A CFD investigation into the transient aerodynamic forces on overtaking road vehicle models’, Journal of Wind Engineering and Industrial Aerodynamics 96, 1390–1411 (2008)
  6. Fluent User Guide 6.3
  7. Krajnovic S. and Davidson L., Large-eddy simulation of the flow around a simplified car model, SAE Paper No. 2004-01-0227 (2004)
  8. John D. and Anderson Jr., Computational Fluid Dynamics-basics with application, McGraw-Hill series in mechanical engineering (1995)
  9. Kumar Krishan and Aggarwal M.L., A Finite Element Approach for Analysis of a Multi Leaf Spring using CAE Tools, Research Journal of Recent Sciences, 1(2), 92-96 (2012)
  10. Purkar T., Sanjay and Pathak Sunil, Aspect of Finite Element Analysis Methods for Prediction of Fatigue Crack Growth Rate, Recent Journal of Research Sciences, 1(2),85 -91 (2012)
  11. Renganathan Manimaran, Rajagopal Thundil Karuppa Raj and Senthil Kumar K., Numerical Analysis of Direct Injection Diesel Engine Combustion using Extended Coherent Flame 3-Zone Model, Res. J. Recent Sci 1(8), 1-9 (2012)
  12. Magarajan U., Thundil Karuppa Raj R. and Elango T., Numerical Study on Heat Transfer of Internal Combustion Engine Cooling by Extended Fins Using CFD, Res. J. Recent Sci 1(6), 32-37 (2012)
  13. Atre Pranav C. and Thundil Karuppa Raj R., Numerical Design and Parametric Optimization of Centrifugal Fans with Airfoil Blade Impellers, Res. J. Recent Sci 1(10), 7-11 (2012)
  14. Chauhan Rajsinh B. and Thundil Karuppa Raj R., Numerical Investigation of External Flow around the Ahmed Reference Body Using Computational Fluid Dynamics, Res. J. Recent Sci 1(9), 1-5 (2012)
  15. Thundil Karuppa Raj R. and Ramsai R., Numerical Study of Fluid Flow and Effect of Inlet Pipe Angle in Catalytic Converter Using CFD, Res. J. Recent Sci 1(7) 39-44 (2012)