Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
Identification of Wall Interference Parameters in Two-Dimensional Testing in Transonic Wind Tunnel Using the PSP Technique
Submission Author:
sergio oliveira , SP
Co-Authors:
Ana Cristina Avelar, Henrique Leite, João Batista Pessoa Falcão Filho
Presenter: Henrique Leite
doi://10.26678/ABCM.ENCIT2016.CIT2016-0655
Abstract
The main factors which influence the accuracy of two-dimensional flow test results in the Pilot Transonic Wind Tunnel (TTP) of IAE are analyzed. The influences of Reynolds number, Mach number, wall interference whereas solid and slot walls, and flow blockage as well as the influence of side-wall boundary layer control are analyzed. Modern instrumentation was used for qualification and quantification of the physical phenomena occuring in the wind tunnel tests using a NACA 0012 airfoil as a test model. In the experiments investigated systematically, different configurations were considered to characterize the influence of the walls with respect to data measured and, mainly, Physical behavior of the phenomena. The analysis showed that is possible obtain zero blockage ("choke") interference in a slotted wall test section. It is necessary actively intervene in the boundary layer control to avoid, partially or completely, three-dimensionality effects. The PSP technique proved useful in this application, providing to be a great quality and important tool. This paper presents, in detail, the use of this technique and its benefits for this study.
Keywords
Transonic Wind Tunnel Testing, Pressure Sensitive Paint, Wall Interference, Transonic Wind Tunnel Testing, Pressure Sensitive Paint, Wall Interference
