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  4. Quantifying uncertain system outputs via the multilevel Monte Carlo method — Part I: Central moment estimation
 
research article

Quantifying uncertain system outputs via the multilevel Monte Carlo method — Part I: Central moment estimation

Krumscheid, S.  
•
Nobile, F.  
•
Pisaroni, M.  
2020
Journal of Computational Physics

In this work we introduce and analyze a novel multilevel Monte Carlo (MLMC) estimator for the accurate approximation of central moments of system outputs affected by uncertainties. Central moments play a central role in many disciplines to characterize a random system output's distribution and are of primary importance in many prediction, optimization, and decision making processes under uncertainties. We detail how to effectively tune the MLMC algorithm for central moments of any order and present a complete practical algorithm that is implemented as part of a Python library [1]. In fact, we validate the methodology on selected reference problems and apply it to an aerodynamic relevant test case, namely the transonic RAE 2822 airfoil affected by operating and geometric uncertainties.

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Type
research article
DOI
10.1016/j.jcp.2020.109466
Author(s)
Krumscheid, S.  
Nobile, F.  
Pisaroni, M.  
Date Issued

2020

Published in
Journal of Computational Physics
Volume

414

Article Number

109466

Subjects

Central moments

•

Multilevel Monte Carlo

•

Uncertainty quantification

•

h-statistic

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CSQI  
FunderGrant Number

EU funding

ACP3-GA-2013-605036

RelationURL/DOI

IsNewVersionOf

https://infoscience.epfl.ch/record/263564
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/168999
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