Multi-fidelity model fusion and uncertainty quantification using high dimensional model representation

Martin Kubicek, Piyush M. Mehta, Edmondo Minisci, Massimiliano Vasile

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

High-fidelity modeling based on experiments or simulations is generally very expensive. Low-fidelity models, when available, typically have simplifying assumptions made during the development and hence are quick but not so accurate. We present development of a new and novel approach for multi-fidelity model fusion to achieve the accuracy of the expensive high-fidelity methods with the speed of the inaccurate low-fidelity models. The multi-fidelity fusion model and the associated uncertainties is achieved using a new derivation of the high dimensional model representation (HDMR) method. The method can provide valuable insights for efficient placement of the expensive high-fidelity simulations in the domain towards reducing the multi-fidelity model uncertainties. The method is applied and validated with aerodynamic and aerothermodynamic models for atmospheric re-entry.

Original languageEnglish
Title of host publicationSpaceflight Mechanics 2016
Subtitle of host publicationProceedings of the 26th AAS/AIAA Space Flight Mechanics Meeting held February 14–18, 2016, Napa, California, U.S.A
EditorsRenato Zanetti, Ryan P. Russell, Martin T. Ozimek, Angela L. Bowes
Place of PublicationSan Diego, California
Pages1987-2002
Number of pages16
Publication statusPublished - 14 Feb 2016
Event26th AAS/AIAA Space Flight Mechanics Meeting, 2016 - Napa, United States
Duration: 14 Feb 201618 Feb 2016

Publication series

NameAdvances in the Astronautical Sciences
PublisherAmerican Astronautical Society
Volume158
ISSN (Print)1081-6003

Conference

Conference26th AAS/AIAA Space Flight Mechanics Meeting, 2016
CountryUnited States
CityNapa
Period14/02/1618/02/16

Keywords

  • multi fidelity model fusion
  • expensive experimentation
  • aeodynamic modeling
  • aerothermodynamic modeling

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