Greedy identification of latent dynamics from parametric flow data

M Oulghelou, A Ammar, R Ayoub - Computer Methods in Applied …, 2024 - Elsevier
Projection-based reduced-order models (ROMs) play a crucial role in simplifying the
complex dynamics of fluid systems. Such models are achieved by projecting the Navier …

Parametric reduced order models based on a Riemannian barycentric interpolation

M Oulghelou, C Allery… - International Journal for …, 2021 - Wiley Online Library
A new strategy for constructing parametric Galerkin reduced order models is presented in
this article. This strategy is achieved thanks to the Riemannian manifold, quotient of the set …

A surrogate optimization approach for inverse problems: Application to turbulent mixed-convection flows

M Oulghelou, C Beghein, C Allery - Computers & Fluids, 2022 - Elsevier
Optimal control of turbulent mixed-convection flows has attracted considerable attention from
researchers. Numerical algorithms such as Genetic Algorithms (GAs) are powerful tools that …

An interior penalty discontinuous Galerkin reduced order model for the variable coefficient advection–diffusion-reaction equation

J Wang, Y Zhang, D Zhu, L Qian - Numerical Algorithms, 2024 - Springer
In this paper, we construct a reduced order model (ROM) to solve the advection–diffusion-
reaction (ADR) equation with variable coefficients. In order to get the desired fidelity solution …

Assessing the wall energy efficiency design under climate change using POD reduced order model

J Berger, C Allery, A Machard - Energy and Buildings, 2022 - Elsevier
Within the environmental context, numerical modeling is a promising approach to assess the
energy efficiency of building. Resilient buildings need to be designed, capable of adapting …

A Riemannian Barycentric Interpolation: Derivation of the Parametric Unsteady Navier-Stokes Reduced Order Model

M Oulghelou, C Allery - arXiv preprint arXiv:2009.11231, 2020 - arxiv.org
A new application of subspaces interpolation for the construction of nonlinear Parametric
Reduced Order Models (PROMs) is proposed. This approach is based upon the …

Numerical Prediction of Two-Phase Flow through a Tube Bundle Based on Reduced-Order Model and a Void Fraction Correlation

C Dubot, C Allery, V Melot, C Béghein, M Oulghelou… - Entropy, 2021 - mdpi.com
Predicting the void fraction of a two-phase flow outside of tubes is essential to evaluate the
thermohydraulic behaviour in steam generators. Indeed, it determines two-phase mixture …

A Closed Machine Learning Parametric Reduced Order Model Approach-Application to Turbulent Flows

M Oulghelou, A Ammar, R Ayoub - Available at SSRN 4446495, 2023 - papers.ssrn.com
Generally, reduced order models of fluid flows are obtained by projecting the Navier-Stokes
equations onto a reduced subspace spanned by vector functions that carry the meaningful …

[PDF][PDF] Sélection topologique dans l'algorithme génétique pour le contrôle optimal

CM Lobe - 16ème Colloque National en Calcul de Structures, 2024 - hal.science
On s' intéresse aux algorithmes génétiques pour le contrôle optimal d'écoulements
turbulents. On propose une méthode pour améliorer leur capacité à capter les oscillations …

Data-Driven Optimization Approach for Inverse Problems: Application to Turbulent Mixed-Convection Flows

M Oulghelou, C Béghein, C Allery - arXiv preprint arXiv:2009.06724, 2020 - arxiv.org
Optimal control of turbulent mixed-convection flows has attracted considerable attention from
researchers. Numerical algorithms such as Genetic Algorithms (GAs) are powerful tools that …