Numerical study of the injection process in a transonic wind tunnel: The numerical details

Filho, João Batista Pessoa Falcão; Ortega, Marcos

doi:10.1016/j.compfluid.2007.10.015

Cited by 7 publications

(1 citation statement)

References 24 publications

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“…Sometimes the positioning of the pressure tap is very difficult because of space limitations. 13 Besides, if the result depends upon the integration of the pressure along the surface, the error involved may even condemn the result. The pressure-sensitive paint (PSP), a technique developed in the 1980s, is a measuring method that avoids the inconveniences of the traditional pressure taps.…”

Section: Pressure-sensitive Paintmentioning

confidence: 98%

Wall Ventilation Effects upon the Flow about an Airfoil in a Transonic Wind Tunnel

2014

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The main objective of the present work is to study the mass extraction in a transonic wind tunnel. The strategy consists in the analysis of the flow in the test section, with special attention devoted to the slots. To this end the results of tests of a NACA 0012 airfoil are presented. Besides, the influence of the returning flaps and forced evacuation compressors upon the results were also assessed. The experimental investigation used both the classical staticpressure taps as well as the ''Pressure Sensitive Paint'' (PSP) techniques. The PSP complete pack includes the devices to apply the special ink, dedicated computer codes, and the electronic equipments necessary in the usage of the technique. This technique permits the measurement of the static pressure along all the surface of the body, and further allowed for the observation of shock waves. To complete the study, the flow inside the test section is also numerically simulated. In overall terms the tunnel stream, the pressure distribution on the airfoil and the flow through the slots are investigated. Values of pressure on the surface of the foil were compared including here the present experimental and numerical results, plus data from the literature what guarantees the proper accuracy of all the investigation performed.

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Section: Pressure-sensitive Paintmentioning

confidence: 98%