Publish In |
International Journal of Mechanical and Production Engineering (IJMPE)-IJMPE |
Journal Home Volume Issue |
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Issue |
Volume-7,Issue-1 ( Jan, 2019 ) | |||||||||
Paper Title |
Laminar-Turbulent Transition Influence on Aerodynamic Performance of Super-Effective Car | |||||||||
Author Name |
M.Stajuda, F.Dymarczyk, M.Bystrzejewski, B.Jakubczak, P.Gutowski | |||||||||
Affilition |
Lodz University of Technology, Faculty of Mechanical Engineering, Institute of Turbomachinery, 90-924 Lodz, 219/223 Wolczanska Street Poland | |||||||||
Pages |
47-53 | |||||||||
Abstract |
Most of super-effective car aerodynamic simulations are performed as fully turbulent. This is to a certain extent justified, but due to close to critical Reynolds number value, the fully turbulent model may not be perfectly adequate, especially that for such a vehicle small changes in drag are important. This paper investigates how laminar-turbulent transition influences the drag and lift characteristics of a super effective car. The analysis compares fully turbulent solution with SST turbulence model with and without Gamma-Theta transitional turbulence modelling. The study is performed for 3 different car body shapes to investigate more general influence of applying laminar-turbulent transition instead of fully turbulent simulations. The results indicate that for every model the difference in drag and lift is above 20%. | |||||||||
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