Abstract
A procedure for the correction of wall interference effects is applied to lift and pitching moment coefficients in automotive wind tunnel testing. The method uses a "post-test" approach based on pressure measurements over the wind tunnel walls.
The sensor locations are chosen following a previous numerical sensitivity analysis. Pressure is evaluated in 320 points that are interpolated linearly in the longitudinal direction, while cubic splines and parabolic laws are used in the cross section. This methodology enables accurate correction of blockage and streamline curvature effects in closed-section automotive wind tunnels.
The correction method significantly improves the accuracy of wind tunnel measurements for automotive applications, reducing systematic errors related to facility constraints.
Conference/Journal: 4th MIRA Aerodynamic Conference, Birmingham (2002)
Keywords: Wind tunnel, Wall interference, Automotive testing, CFD correction
5th MIRA International Vehicle Aerodynamics Conference, paper VA 2002/03, Warwick (England)
