A review on design of experiments and surrogate models in aircraft real-time and many-query aerodynamic analyses

R Yondo, E Andrés, E Valero - Progress in aerospace sciences, 2018 - Elsevier
Full scale aerodynamic wind tunnel testing, numerical simulation of high dimensional (full-
order) aerodynamic models or flight testing are some of the fundamental but complex steps …

The GNAT method for nonlinear model reduction: effective implementation and application to computational fluid dynamics and turbulent flows

K Carlberg, C Farhat, J Cortial, D Amsallem - Journal of Computational …, 2013 - Elsevier
The Gauss–Newton with approximated tensors (GNAT) method is a nonlinear model-
reduction method that operates on fully discretized computational models. It achieves …

Galerkin v. least-squares Petrov–Galerkin projection in nonlinear model reduction

K Carlberg, M Barone, H Antil - Journal of Computational Physics, 2017 - Elsevier
Abstract Least-squares Petrov–Galerkin (LSPG) model-reduction techniques such as the
Gauss–Newton with Approximated Tensors (GNAT) method have shown promise, as they …

Crom: Continuous reduced-order modeling of pdes using implicit neural representations

PY Chen, J Xiang, DH Cho, Y Chang… - arXiv preprint arXiv …, 2022 - arxiv.org
The long runtime of high-fidelity partial differential equation (PDE) solvers makes them
unsuitable for time-critical applications. We propose to accelerate PDE solvers using …

Stability of discrete empirical interpolation and gappy proper orthogonal decomposition with randomized and deterministic sampling points

B Peherstorfer, Z Drmac, S Gugercin - SIAM Journal on Scientific Computing, 2020 - SIAM
This work investigates the stability of (discrete) empirical interpolation for nonlinear model
reduction and state field approximation from measurements. Empirical interpolation derives …

The adjoint Petrov–Galerkin method for non-linear model reduction

EJ Parish, CR Wentland, K Duraisamy - Computer Methods in Applied …, 2020 - Elsevier
We formulate a new projection-based reduced-order modeling technique for non-linear
dynamical systems. The proposed technique, which we refer to as the Adjoint Petrov …

On the impact of dimensionally-consistent and physics-based inner products for POD-Galerkin and least-squares model reduction of compressible flows

EJ Parish, F Rizzi - Journal of Computational Physics, 2023 - Elsevier
Abstract Model reduction of the compressible Euler equations based on proper orthogonal
decomposition (POD) and Galerkin orthogonality or least-squares residual minimization …

Windowed space–time least-squares Petrov–Galerkin model order reduction for nonlinear dynamical systems

YS Shimizu, EJ Parish - Computer Methods in Applied Mechanics and …, 2021 - Elsevier
Projection-based reduced-order models (PROMs) restrict the full-order model (FOM) to a low-
dimensional subspace. Space–time PROMs in particular restrict the FOM to a temporally …

Development of a hypersonic aerothermoelastic framework and its application to flutter and aerothermoelastic scaling of skin panels

D Huang - 2019 - deepblue.lib.umich.edu
In the past decade, there has been a strong interest in reusable air-breathing hypersonic
vehicles for in both civil and military applications. However, there are still the unresolved …

Windowed least-squares model reduction for dynamical systems

EJ Parish, KT Carlberg - Journal of Computational Physics, 2021 - Elsevier
This work proposes a windowed least-squares (WLS) approach for model reduction of
dynamical systems. The proposed approach sequentially minimizes the time-continuous full …