Uncertainty Quantification for a Flapping Airfoil with Chordwise Flexure

Abstract:

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The uncertainty quantification for a flexible flapping airfoil was investigated using the point-collocation non-intrusive polynomial chaos method. The chordwise flexible amplitude was assumed to obey a normal distribution. It is observed that the time-averaged thrust coefficient obeys a Gauss-like but not the exact Gauss distribution, while the probability of the propulsive efficiency is much different from the exact Gauss distribution. The effect of the chordwise flexure on the time-averaged thrust coefficient is much larger than the effect on the propulsive efficiency. This work could be a preparation for the robust design of a flexible flapping wing with respect to a stochastic chordwise flexure.

Info:

Periodical:

Advanced Materials Research (Volumes 308-310)

Edited by:

Jian Gao

Pages:

1448-1453

DOI:

10.4028/www.scientific.net/AMR.308-310.1448

Citation:

L. Y. Zhao et al., "Uncertainty Quantification for a Flapping Airfoil with Chordwise Flexure", Advanced Materials Research, Vols. 308-310, pp. 1448-1453, 2011

Online since:

August 2011

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Price:

$35.00

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