Correction Of The Wall Interference Effects In Wind Tunnel Experiments
Author(s)
G. Lombardi, M.V. Salvetti, M. Morelli
Abstract
Correction of the wall interference effects in wind
tunnel experiments
G. Lombard!', M.V. Salvetti', M. MorellP
^Department of Aerospace Engineering, University of Pisa, Italy
*Medium Speed Wind Tunnel, CSIR, South Africa
Abstract
A procedure for the correction of wall interference effects is applied to lift and
pitching moment coefficients, measured over a complete aircraft configuration in
subsonic conditions in the High Speed Wind Tunnel (CSIR Laboratories).
A "post-test" method is used, based on pressure measurements over the wind
tunnel walls.
The location of the sensors for pressure measurements is chosen following a
previous numerical sensitivity analysis. In particular, pressure is evaluated in 320
points. Those values are interpolated linearly in the longitudinal direction, while
cubic splines and parabolic laws are used in the cross section.
The correction is obtained as the difference between the values given by two
numerical simulations: in the first one the
Keywords
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