Numerical study on transonic shock oscillation suppression and buffet load alleviation for a supercritical airfoil using a microtab
The effect of microtabs on shock oscillation suppression and buffet load alleviation for the National Aeronautics and Space Administration (NASA) SC(2)-0714 supercritical airfoil is studied. The unsteady flow field around the airfoil with a microtab is simulated with an unsteady Reynolds-averaged Na...
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Online Access: | http://dx.doi.org/10.1080/19942060.2016.1210029 |
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doaj-89b39d3f2a104cbc811556241a4aeca12020-11-24T22:37:40ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2016-01-0110152954410.1080/19942060.2016.12100291210029Numerical study on transonic shock oscillation suppression and buffet load alleviation for a supercritical airfoil using a microtabJinli Liu0Zhichun Yang1Northwestern Polytechnical UniversityNorthwestern Polytechnical UniversityThe effect of microtabs on shock oscillation suppression and buffet load alleviation for the National Aeronautics and Space Administration (NASA) SC(2)-0714 supercritical airfoil is studied. The unsteady flow field around the airfoil with a microtab is simulated with an unsteady Reynolds-averaged Navier–Stokes (URANS) simulation method using the scale adaptive simulation-shear stress transport turbulence model. Firstly, the influence of the microtab installation position along the upper airfoil surface is investigated with respect to the buffet load and the characteristics of the unsteady flow field. The results show that the shock oscillating range and moving average speed decrease substantially when the microtab is installed in the middle region between the shock and trailing edges of the airfoil. Subsequently, the effects of the protruding height (0.50%, 0.75% and 1.00% of the chord length) of the microtab (installed at x/c = 0.8 on the upper airfoil surface) on the buffet load and flow field are studied, and the results show that the effect on buffet load alleviation is best when the protruding height of the microtab is 0.75% of the chord length. Finally, the mechanism of buffet load alleviation with the microtab on the upper airfoil surface is briefly discussed.http://dx.doi.org/10.1080/19942060.2016.1210029shock oscillation suppressionbuffet load alleviationmicrotabtransonic flowURANS |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jinli Liu Zhichun Yang |
spellingShingle |
Jinli Liu Zhichun Yang Numerical study on transonic shock oscillation suppression and buffet load alleviation for a supercritical airfoil using a microtab Engineering Applications of Computational Fluid Mechanics shock oscillation suppression buffet load alleviation microtab transonic flow URANS |
author_facet |
Jinli Liu Zhichun Yang |
author_sort |
Jinli Liu |
title |
Numerical study on transonic shock oscillation suppression and buffet load alleviation for a supercritical airfoil using a microtab |
title_short |
Numerical study on transonic shock oscillation suppression and buffet load alleviation for a supercritical airfoil using a microtab |
title_full |
Numerical study on transonic shock oscillation suppression and buffet load alleviation for a supercritical airfoil using a microtab |
title_fullStr |
Numerical study on transonic shock oscillation suppression and buffet load alleviation for a supercritical airfoil using a microtab |
title_full_unstemmed |
Numerical study on transonic shock oscillation suppression and buffet load alleviation for a supercritical airfoil using a microtab |
title_sort |
numerical study on transonic shock oscillation suppression and buffet load alleviation for a supercritical airfoil using a microtab |
publisher |
Taylor & Francis Group |
series |
Engineering Applications of Computational Fluid Mechanics |
issn |
1994-2060 1997-003X |
publishDate |
2016-01-01 |
description |
The effect of microtabs on shock oscillation suppression and buffet load alleviation for the National Aeronautics and Space Administration (NASA) SC(2)-0714 supercritical airfoil is studied. The unsteady flow field around the airfoil with a microtab is simulated with an unsteady Reynolds-averaged Navier–Stokes (URANS) simulation method using the scale adaptive simulation-shear stress transport turbulence model. Firstly, the influence of the microtab installation position along the upper airfoil surface is investigated with respect to the buffet load and the characteristics of the unsteady flow field. The results show that the shock oscillating range and moving average speed decrease substantially when the microtab is installed in the middle region between the shock and trailing edges of the airfoil. Subsequently, the effects of the protruding height (0.50%, 0.75% and 1.00% of the chord length) of the microtab (installed at x/c = 0.8 on the upper airfoil surface) on the buffet load and flow field are studied, and the results show that the effect on buffet load alleviation is best when the protruding height of the microtab is 0.75% of the chord length. Finally, the mechanism of buffet load alleviation with the microtab on the upper airfoil surface is briefly discussed. |
topic |
shock oscillation suppression buffet load alleviation microtab transonic flow URANS |
url |
http://dx.doi.org/10.1080/19942060.2016.1210029 |
work_keys_str_mv |
AT jinliliu numericalstudyontransonicshockoscillationsuppressionandbuffetloadalleviationforasupercriticalairfoilusingamicrotab AT zhichunyang numericalstudyontransonicshockoscillationsuppressionandbuffetloadalleviationforasupercriticalairfoilusingamicrotab |
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