Ground effect – Knowledge and References

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Predicting Effects of Vegetation, Trees and Turbulence

Published in Keith Attenborough, Timothy Van Renterghem, Predicting Outdoor Sound, 2021

Keith Attenborough, Timothy Van Renterghem

Figures 10.29 (c) and (d) show separate predictions of ground effect, ground effect modified by refraction plus trunk scattering and ground effect modified by refraction, trunk scattering and canopy scattering, respectively, at 315 m range for upwind and downwind conditions respectively. Upward refraction due to wind and temperature gradients in the foliage is predicted to have a significant effect. It should be noted also that trunk scattering has an important effect above 500 Hz.

High downforce race car vertical dynamics: aerodynamic index

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Journal Information

Published in Vehicle System Dynamics, 2018

Felipe Pereira Marchesin, Roberto Spinola Barbosa, Marco Gadola, Daniel Chindamo

At a second glance, but no less important, the dynamic ride heights affect the aerodynamic performance. Because the car ground clearance is very low, it benefits from ground effect in generating more downforce. As the aerodynamic coefficients are a function of front and rear ride heights, setting the correct dynamic ride heights for each track can optimise overall performance. Figure 5 shows the downforce coefficient, aerobalance and pitch moment coefficient for the longitudinal speed sweep (from 0 km/h up to 230 km/h).