Transonic wind tunnel wall interference minimization

Grunnet, James L.

doi:10.2514/3.45016

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Over the past few years, many experimental [7][8][9] and numerical [10][11][12] studies have been devoted to wall interferences of wind tunnel at transonic regime and their consequences. In addition, many research papers have been published about the e ect of porosity based on optimization [13,14].…”

Section: Introductionmentioning

confidence: 99%

Effect of wind tunnel wall porosity on the flow around an oscillating airfoil at transonic speeds

2017

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Abstract. The e ect of porosity in oscillating situations (to the authors' knowledge, for the rst time) on a supercritical airfoil (SC0410) has been experimentally investigated. Tests have been carried out in an open circuit suction-type wind tunnel at a free stream Mach number of M = 0:80. Both static and dynamic (pitching) tests have been carried out on the mentioned airfoil. The oscillation frequency for the unsteady tests has been set to 3 and 6 Hz. The amplitude of frequency is 1 deg. The e ect of porosity has been surveyed on the magnitude of pressure uctuations, phase shift, and lift coe cient loop. The investigations show that increasing porosity in the test section of transonic regime, contrary to the impression, does not necessarily improve results.

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Section: Introductionmentioning

confidence: 99%

Effect of wind tunnel wall porosity on the flow around an oscillating airfoil at transonic speeds

2017

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“…An optimized and non-uniform porosity distribution along the test section centerline instead of an uniform value can be used in order to maximize the reduction of the wall interference over the widest possible Mach number range 1,2,3,4 .…”

Section: Introductionmentioning

confidence: 99%