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Adaptive h -refinement for reduced-order models: ADAPTIVE h -refinement for reduced-order models

Journal Article · · International Journal for Numerical Methods in Engineering
DOI:https://doi.org/10.1002/nme.4800· OSTI ID:1141744
 [1]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Our work presents a method to adaptively refine reduced-order models a posteriori without requiring additional full-order-model solves. The technique is analogous to mesh-adaptive h-refinement: it enriches the reduced-basis space online by ‘splitting’ a given basis vector into several vectors with disjoint support. The splitting scheme is defined by a tree structure constructed offline via recursive k-means clustering of the state variables using snapshot data. This method identifies the vectors to split online using a dual-weighted-residual approach that aims to reduce error in an output quantity of interest. The resulting method generates a hierarchy of subspaces online without requiring large-scale operations or full-order-model solves. Furthermore, it enables the reduced-order model to satisfy any prescribed error tolerance regardless of its original fidelity, as a completely refined reduced-order model is mathematically equivalent to the original full-order model. Experiments on a parameterized inviscid Burgers equation highlight the ability of the method to capture phenomena (e.g., moving shocks) not contained in the span of the original reduced basis.

Research Organization:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1141744
Report Number(s):
SAND--2014-2732J; 507023
Journal Information:
International Journal for Numerical Methods in Engineering, Journal Name: International Journal for Numerical Methods in Engineering Journal Issue: 5 Vol. 102; ISSN 0029-5981
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (10)

Limited-memory adaptive snapshot selection for proper orthogonal decomposition: ADAPTIVE SNAPSHOT SELECTION FOR POD
  • Oxberry, Geoffrey M.; Kostova-Vassilevska, Tanya; Arrighi, William
  • International Journal for Numerical Methods in Engineering, Vol. 109, Issue 2 https://doi.org/10.1002/nme.5283
journal July 2016
Transported snapshot model order reduction approach for parametric, steady-state fluid flows containing parameter-dependent shocks: Model order reduction for fluid flows containing shocks journal December 2018
Randomized low‐rank approximation methods for projection‐based model order reduction of large nonlinear dynamical problems journal January 2019
Fixed‐precision randomized low‐rank approximation methods for nonlinear model order reduction of large systems journal April 2019
Enhancing piecewise‐defined surrogate response surfaces with adjoints on sets of unstructured samples to solve stochastic inverse problems journal May 2019
Adaptive multi‐index collocation for uncertainty quantification and sensitivity analysis
  • Jakeman, John D.; Eldred, Michael S.; Geraci, Gianluca
  • International Journal for Numerical Methods in Engineering, Vol. 121, Issue 6 https://doi.org/10.1002/nme.6268
journal November 2019
Adaptive multi‐index collocation for uncertainty quantification and sensitivity analysis
  • Jakeman, John D.; Eldred, Michael S.; Geraci, Gianluca
  • International Journal for Numerical Methods in Engineering, Vol. 121, Issue 19 https://doi.org/10.1002/nme.6450
journal August 2020
POD model order reduction with space-adapted snapshots for incompressible flows journal September 2019
Limited-memory adaptive snapshot selection for proper orthogonal decomposition report April 2015
Adaptive multi-index collocation for uncertainty quantification and sensitivity analysis report November 2019

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