Estimation of cavitation velocity fields based on limited pressure data through improved U-shaped neural network

Y Xu, Y Sha, C Wang, Y Wei - Physics of Fluids, 2023 - pubs.aip.org
In marine applications, estimating velocity fields or other states from limited data are
important as it provides a reference for active control. In this work, we propose PVNet …

Experimental investigation of combustion instability in a centrally staged combustor under self-excited oscillation conditions

J Ma, M Han, X Han, X Hui, X Xue - Physics of Fluids, 2023 - pubs.aip.org
This paper presents an experimental investigation of combustion instability and flame
dynamics in a laboratory-scale lean premixed prevaporized centrally staged combustor …

[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 …

Information sharing-based multivariate proper orthogonal decomposition

Z Wang, G Zhang, T Sun, H Huang - Physics of Fluids, 2023 - pubs.aip.org
This study explores challenges in multivariate modal decomposition for various flow
scenarios, emphasizing the problem of inconsistent physical modes in Proper Orthogonal …

A data-driven identification of runner flow patterns in a model pump-turbine by machine learning methods

X Zhang, Q Yang, Q Chen, R Chen - Journal of Energy Storage, 2024 - Elsevier
Reversible pump-turbines are the core component in most pumped storage power stations
worldwide; however, their performances are worst affected by the unstable hydraulic …

[HTML][HTML] Proper orthogonal decomposition method of constructing a reduced-order model for solving partial differential equations with parametrized initial values

Y Nakamura, S Sato, N Ohnishi - Partial Differential Equations in Applied …, 2024 - Elsevier
This paper proposes a novel proper orthogonal decomposition method for constructing a
reduced-order model. This model effectively computes solutions for various initial conditions …

Modal decomposition of flow instabilities in a straight turbine diffuser around the best efficiency point

JD Buron, S Houde - Physics of Fluids, 2023 - pubs.aip.org
Hydraulic turbines sometimes exhibit a sharp efficiency drop around the best efficiency
point. The drop is known to originate from large flow separations in their draft tubes, limiting …

[HTML][HTML] pyLOM: A HPC open source reduced order model suite for fluid dynamics applications

B Eiximeno, A Miró, B Begiashvili, E Valero… - Computer Physics …, 2025 - Elsevier
This paper describes the numerical implementation in a high-performance computing
environment of an open-source library for model order reduction in fluid dynamics. This …

[HTML][HTML] Application of proper orthogonal decomposition to flow fields around various geometries and reduced-order modeling

Y Nakamura, S Sato, N Ohnishi - Computer Methods in Applied Mechanics …, 2024 - Elsevier
This study is focused on a reduced-order model (ROM) based on proper orthogonal
decomposition (POD) for unsteady flow around a stationary object, which allows prediction …

Exploration of transient flow perturbations in a bulb turbine diffuser using proper orthogonal decomposition

JD Buron, S Houde - Physics of Fluids, 2023 - pubs.aip.org
Hydraulic turbines with high efficiency over a wide range of operating conditions offer a
much sought-after flexibility to electricity producers. However, some low-head turbines …