WIT Press


Correction Of The Wall Interference Effects In Wind Tunnel Experiments

Price

Free (open access)

Paper DOI

10.2495/CMEM010071

Volume

30

Pages

10

Published

2001

Size

893 kb

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

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