Paper Title :Laminar-Turbulent Transition Influence on Aerodynamic Performance of Super-Effective Car

Author :M.Stajuda, F.Dymarczyk, M.Bystrzejewski, B.Jakubczak, P.Gutowski

Article Citation :M.Stajuda ,F.Dymarczyk ,M.Bystrzejewski ,B.Jakubczak ,P.Gutowski , (2019 ) " Laminar-Turbulent Transition Influence on Aerodynamic Performance of Super-Effective Car " , International Journal of Mechanical and Production Engineering (IJMPE) , pp. 47-53, Volume-7,Issue-1

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%.

Type : Research paper

Published : Volume-7,Issue-1

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