Robust performance assessment for an oscillating airfoil combining the time spectral method and a semi-intrusive uncertainty propagation approach

P. M. Congedo; C. Corre; R. Abgrall

Robust performance assessment for an oscillating airfoil combining the time spectral method and a semi-intrusive uncertainty propagation approach

P. M. Congedo
, C. Corre
, R. Abgrall

Research output: Contribution to conference › Paper › peer-review

Abstract

The power extracted from a flowing fluid by an oscillating airfoil in a combined heaving and pitching motion is analyzed with fluctuations of the heaving amplitude taken into account. The uncertainties on the airfoil motion are propagated throughout the ALE artificial compressibility solver using an original semi-intrusive (SI) method which can be applied to uncertainties described by any type of probability density function.The computational cost is reduced thanks to an implicit time spectral (TSM) method. The TSM/SI strategy is compared, in terms of accuracy and robustness, with a more conventional dual-time-step/non-intrusive polynomial chaos approach.

Original language	English
Publication status	Published - 1 Jan 2012
Externally published	Yes
Event	7th International Conference on Computational Fluid Dynamics, ICCFD 2012 - Big Island, United States Duration: 9 Jul 2012 → 13 Jul 2012

Conference

Conference	7th International Conference on Computational Fluid Dynamics, ICCFD 2012
Country/Territory	United States
City	Big Island
Period	9/07/12 → 13/07/12

Keywords

Oscillating airfoil
Semi-intrusive strategy
Time spectral method
Uncertain motion
Uncertainty propagation

Cite this

@conference{d4bbc5439a2441b58d53a9464a0ce268,

title = "Robust performance assessment for an oscillating airfoil combining the time spectral method and a semi-intrusive uncertainty propagation approach",

abstract = "The power extracted from a flowing fluid by an oscillating airfoil in a combined heaving and pitching motion is analyzed with fluctuations of the heaving amplitude taken into account. The uncertainties on the airfoil motion are propagated throughout the ALE artificial compressibility solver using an original semi-intrusive (SI) method which can be applied to uncertainties described by any type of probability density function.The computational cost is reduced thanks to an implicit time spectral (TSM) method. The TSM/SI strategy is compared, in terms of accuracy and robustness, with a more conventional dual-time-step/non-intrusive polynomial chaos approach.",

keywords = "Oscillating airfoil, Semi-intrusive strategy, Time spectral method, Uncertain motion, Uncertainty propagation",

author = "Congedo, \{P. M.\} and C. Corre and R. Abgrall",

note = "Publisher Copyright: {\textcopyright} 2012 7th International Conference on Computational Fluid Dynamics, ICCFD 2012. All rights reserved.; 7th International Conference on Computational Fluid Dynamics, ICCFD 2012 ; Conference date: 09-07-2012 Through 13-07-2012",

year = "2012",

month = jan,

day = "1",

language = "English",

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Robust performance assessment for an oscillating airfoil combining the time spectral method and a semi-intrusive uncertainty propagation approach. / Congedo, P. M.; Corre, C.; Abgrall, R.
2012. Paper presented at 7th International Conference on Computational Fluid Dynamics, ICCFD 2012, Big Island, United States.

Research output: Contribution to conference › Paper › peer-review

TY - CONF

T1 - Robust performance assessment for an oscillating airfoil combining the time spectral method and a semi-intrusive uncertainty propagation approach

AU - Congedo, P. M.

AU - Corre, C.

AU - Abgrall, R.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - The power extracted from a flowing fluid by an oscillating airfoil in a combined heaving and pitching motion is analyzed with fluctuations of the heaving amplitude taken into account. The uncertainties on the airfoil motion are propagated throughout the ALE artificial compressibility solver using an original semi-intrusive (SI) method which can be applied to uncertainties described by any type of probability density function.The computational cost is reduced thanks to an implicit time spectral (TSM) method. The TSM/SI strategy is compared, in terms of accuracy and robustness, with a more conventional dual-time-step/non-intrusive polynomial chaos approach.

AB - The power extracted from a flowing fluid by an oscillating airfoil in a combined heaving and pitching motion is analyzed with fluctuations of the heaving amplitude taken into account. The uncertainties on the airfoil motion are propagated throughout the ALE artificial compressibility solver using an original semi-intrusive (SI) method which can be applied to uncertainties described by any type of probability density function.The computational cost is reduced thanks to an implicit time spectral (TSM) method. The TSM/SI strategy is compared, in terms of accuracy and robustness, with a more conventional dual-time-step/non-intrusive polynomial chaos approach.

KW - Oscillating airfoil

KW - Semi-intrusive strategy

KW - Time spectral method

KW - Uncertain motion

KW - Uncertainty propagation

M3 - Paper

AN - SCOPUS:85085671453

T2 - 7th International Conference on Computational Fluid Dynamics, ICCFD 2012

Y2 - 9 July 2012 through 13 July 2012

ER -

Robust performance assessment for an oscillating airfoil combining the time spectral method and a semi-intrusive uncertainty propagation approach

Abstract

Conference

Keywords

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Cite this