Airfoil Design Under Uncertainty Using Non-Intrusive Polynomial Chaos Theory and Utility Functions - Publikacja - MOST Wiedzy

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Airfoil Design Under Uncertainty Using Non-Intrusive Polynomial Chaos Theory and Utility Functions

Abstrakt

Fast and accurate airfoil design under uncertainty using non-intrusive polynomial chaos (NIPC) expansions and utility functions is proposed. The NIPC expansions provide a means to efficiently and accurately compute statistical information for a given set of input variables with associated probability distribution. Utility functions provide a way to rigorously formulate the design problem. In this work, these two methods are integrated for the design of airfoil shapes under uncertainty. The proposed approach is illustrated on a numerical example of lift-constrained airfoil drag minimization in transonic viscous flow using the Mach number as an uncertain variable. The results show that compared with the standard problem formulation the proposed approach yields more robust designs. In other words, t he designs obtained by the proposed approach are less sensitive to variations in the uncertain variables than those obtained with the standard problem formulation.

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Informacje szczegółowe

Kategoria:
Aktywność konferencyjna
Typ:
materiały konferencyjne indeksowane w Web of Science
Opublikowano w:
Procedia Computer Science nr 108, strony 1493 - 1499,
ISSN: 1877-0509
Tytuł wydania:
International Conference on Computational Science (ICCS) strony 1493 - 1499
Język:
angielski
Rok wydania:
2017
Opis bibliograficzny:
Du X., Leifsson L., Kozieł S., Bekasiewicz A..: Airfoil Design Under Uncertainty Using Non-Intrusive Polynomial Chaos Theory and Utility Functions, W: International Conference on Computational Science (ICCS), 2017, ,.
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.procs.2017.05.079
Weryfikacja:
Politechnika Gdańska

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