Moving Belt with Distributed Suction in the Porsche Model Wind Tunnel

Paper #:
  • 1999-01-0650

Published:
  • 1999-03-01
Citation:
Mueller, R., Singer, N., and Eckert, W., "Moving Belt with Distributed Suction in the Porsche Model Wind Tunnel," SAE Technical Paper 1999-01-0650, 1999, https://doi.org/10.4271/1999-01-0650.
Pages:
9
Abstract:
The Porsche 1:4-scale model wind tunnel was upgraded with a moving belt in combination with basic and distributed boundary layer suction devices. The belt is placed between the rotating wheels of the model with the external underfloor balance in operation. Special attention was given to providing a sufficient length of the belt with regard to road simulation for the aerodynamic optimization of race car models with their specific wake behavior. The boundary layer suction systems control the regions beyond the belt. Furthermore the balance was equipped with a pitch angle adjustment system in order to simulate the spring deflections of a moving vehicle.Results from a series of measurements taken from one race car model and one passenger car model are presented in order to investigate the influence of the boundary layer-, wheel rotation- and pitch adjustment-controls on the characteristic aerodynamic figures of the models.
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