Koopman analysis by the dynamic mode decomposition in wind engineering

CY Li, Z Chen, X Zhang, KT Tim, C Lin - Journal of Wind Engineering and …, 2023 - Elsevier
The Koopman theory, a concept to globally model nonlinear signals by a linear Hamiltonian,
has been at the frontier of fluid mechanics research for the last decade. Wind engineering …

Best practice guidelines for the dynamic mode decomposition from a wind engineering perspective

CY Li, Z Chen, AU Weerasuriya, X Zhang, X Lin… - Journal of Wind …, 2023 - Elsevier
This paper distills the serial work of Li et al., 2020a, Li et al., 2021, Li et al., 2022a, Li et al.,
2022b, Li et al., 2022c, Li et al., 2023a, Li et al., 2023b into a practice guide for the Dynamic …

Construction of a reduced-order model of an electro-osmotic micromixer and discovery of attractors for petal structure

Q Xiao, J Wang, X Yang, B Jiang - Physics of Fluids, 2023 - pubs.aip.org
The chaotic state of microfluidic devices such as electroosmotic micromixers has received
extensive attention. Its unsteady flow and multi-physics mask low-dimensional structure and …

[HTML][HTML] Flow structure and dynamics behind cylinder arrays at Reynolds number∼ 100

M Sharifi Ghazijahani, C Cierpka - Physics of Fluids, 2023 - pubs.aip.org
The flow behind nine different arrays of cylinders is experimentally investigated via Particle
Image Velocimetry (PIV) at a Reynolds number of Re∼ 100 based on the diameter of the …

Fluid–structure interaction on vibrating square prisms considering interference effects

Z Chen, Y Wang, S Wang, H Huang, K Yuan, S Li… - Physics of …, 2023 - pubs.aip.org
Existing research on interference effects predominantly focuses on rigid structures.
However, studies based on rigid models tend to overlook the feedback of structural motions …

Characteristics of aerodynamic interference and flow phenomenology around inclined square prisms

Z Chen, S Li, L Zhang, C Yuan, Z Zhao, Y Wu, Y Xu… - Physics of …, 2023 - pubs.aip.org
This study conducts large eddy simulations (LES) to investigate the aerodynamic
interference effects and flow field characteristics of the flow around square cylinders, taking …

Koopman-inspired data-driven quantification of fluid–structure energy transfers

CY Li, L Zhang, S Li, X Zhang, Z Chen, Y Fu, X Lin… - Physics of …, 2024 - pubs.aip.org
The linear-time-invariance notion to the Koopman analysis is a recent advance in fluid
mechanics [Li et al.,“The linear-time-invariance notion to the Koopman analysis: The …

Predictions for unsteady flow fields with deep learning models of LSTM and GRU

Z Xing-Wei, C Jian-Qiao, Z Ke, Z Shi-Xiong… - IEEE …, 2024 - ieeexplore.ieee.org
Deep learning methods based on time series prediction are widely applied to solving fluid
dynamics problems. However, the application characteristics of Long Short-Term Memory …

[PDF][PDF] Tensor decomposition-based neural operator with dynamic mode decomposition for parameterized time-dependent problems

Y Chena, Y Linb, X Suna, C Yuana, Z Gaoa - researchgate.net
Deep operator network (DeepONet), a powerful tool to approximate nonlinear mappings
between different function spaces, has attracted researchers' attention recently for its …