An Influence Matrix Method for Determining Boundary Interference on Automotive Models in Solid-Wall Wind Tunnels

Paper #:
  • 2014-01-0611

Published:
  • 2014-04-01
DOI:
  • 10.4271/2014-01-0611
Citation:
Cooper, K. and Mokry, M., "An Influence Matrix Method for Determining Boundary Interference on Automotive Models in Solid-Wall Wind Tunnels," SAE Technical Paper 2014-01-0611, 2014, doi:10.4271/2014-01-0611.
Pages:
16
Abstract:
The solid-wall wind tunnel boundary correction method outlined in this paper is an efficient pressure-signature method that requires few wall-mounted pressures. These pressures are used to determine the strengths of model- and wake-representing singularities that are used with the method of images to calculate the longitudinal and lateral velocity increments induced by the wind tunnel walls. Two force correction models are presented that convert these velocity increments to force and moment corrections. The performances of the correction procedures are demonstrated by their application to data from two sets of four, geometrically identical, differently sized, simplified automotive models.
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