Laminar-Turbulent Transition Influence on Aerodynamic Performance of Super-Effective Car
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%.