Table 1 Determined spoiler angles for the audi A5 at two design points along with their aerodynamic characteristics at different Reynolds numbers.
From: Improving the aerodynamics of a fastback car body using a spoiler
Design points | Road conditions (relatively high speed) | Rapid deceleration conditions (aerodynamic braking) | ||||
---|---|---|---|---|---|---|
Design parameters | \({C}_{d}\) | \({C}_{l}\) | Angle of spoiler (°) | \({C}_{d}\) | \({C}_{l}\) | Angle of spoiler (°) |
Re = 4.87 × 106 | 0.310 | − 0.0122 | 0 | 0.552 | − 0.127 | 45 |
Re = 9.75 × 106 | 0.314 | − 0.0208 | 0 | 0.610 | − 0.1283 | 60 |
Re = 14.61 × 106 | 0.317 | − 0.005 | 0 | 0.588 | − 0.132 | 55 |