Discovering causal relations and equations from data

G Camps-Valls, A Gerhardus, U Ninad, G Varando… - Physics Reports, 2023 - Elsevier
Physics is a field of science that has traditionally used the scientific method to answer
questions about why natural phenomena occur and to make testable models that explain the …

[HTML][HTML] Towards extraction of orthogonal and parsimonious non-linear modes from turbulent flows

H Eivazi, S Le Clainche, S Hoyas, R Vinuesa - Expert Systems with …, 2022 - Elsevier
Modal-decomposition techniques are computational frameworks based on data aimed at
identifying a low-dimensional space for capturing dominant flow features: the so-called …

Causality analysis of large-scale structures in the flow around a wall-mounted square cylinder

Á Martínez-Sánchez, E López… - Journal of Fluid …, 2023 - cambridge.org
The aim of this work is to analyse the formation mechanisms of large-scale coherent
structures in the flow around a wall-mounted square cylinder, due to their impact on pollutant …

[HTML][HTML] ModelFLOWs-app: data-driven post-processing and reduced order modelling tools

A Hetherington, A Corrochano… - Computer Physics …, 2024 - Elsevier
This article presents an innovative open-source software named ModelFLOWs-app, 1
written in Python, which has been created and tested to generate precise and robust hybrid …

[HTML][HTML] On the generation and destruction mechanisms of arch vortices in urban fluid flows

E Lazpita, Á Martínez-Sánchez, A Corrochano… - Physics of …, 2022 - pubs.aip.org
This study uses higher-order dynamic mode decomposition to analyze a high-fidelity
database of the turbulent flow in an urban environment consisting of two buildings separated …

[HTML][HTML] Predicting the wall-shear stress and wall pressure through convolutional neural networks

AG Balasubramanian, L Guastoni, P Schlatter… - International Journal of …, 2023 - Elsevier
The objective of this study is to assess the capability of convolution-based neural networks
to predict the wall quantities in a turbulent open channel flow, starting from measurements …

Spatiotemporal Koopman decomposition of second mode instability from a hypersonic schlieren video

AC Ghannadian, RC Gosse, S Roy, ZD Lawless… - Physics of …, 2024 - pubs.aip.org
Data-driven modal analysis methods provide a powerful way to decompose data into a sum
of modes. The spatiotemporal Koopman decomposition (STKD) enables the computation of …

Mode decomposition of core dynamics transients using higher-order DMD method

W Li, J Li, J Yao, S Peng, Q He, T Wang… - … Engineering and Design, 2024 - Elsevier
Accurately predicting three-dimensional power distribution within a reactor core during
reactivity transients is crucial for optimizing reactor operational control. This paper proposes …

Analysis of transient and intermittent flows using a multidimensional empirical mode decomposition

LF de Souza, RF Miotto, WR Wolf - Theoretical and Computational Fluid …, 2024 - Springer
Modal decomposition techniques are important tools for the analysis of unsteady flows and,
in order to provide meaningful insights with respect to coherent structures and their …

Hydrodynamic characterization of bubble column using Dynamical High Order Decomposition approach

C Mendez, FP Santos, GGS Ferreira - Journal of Computational Science, 2024 - Elsevier
Bubble columns play a crucial role in a wide range of industries, including chemical and
biochemical processes, petrochemicals, and environmental engineering. Understanding the …