A parametric and feasibility study for data sampling of the dynamic mode decomposition: range, resolution, and universal convergence states
Scientific research and engineering practice often require the modeling and decomposition
of nonlinear systems. The dynamic mode decomposition (DMD) is a novel Koopman-based …
of nonlinear systems. The dynamic mode decomposition (DMD) is a novel Koopman-based …
Best practice guidelines for the dynamic mode decomposition from a wind engineering perspective
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 …
2022b, Li et al., 2022c, Li et al., 2023a, Li et al., 2023b into a practice guide for the Dynamic …
The linear-time-invariance notion to the Koopman analysis: The architecture, pedagogical rendering, and fluid–structure association
This work augments a Linear-Time-Invariance (LTI) notion to the Koopman analysis, finding
an invariant subspace on which consistent Koopman modes are expanded with fluid …
an invariant subspace on which consistent Koopman modes are expanded with fluid …
Hierarchy of coherent vortices in turbulence behind a cylinder
To draw concrete pictures of the hierarchy of multiscale coherent vortices in turbulence
behind a cylinder and to reveal their sustaining mechanism, we conduct direct numerical …
behind a cylinder and to reveal their sustaining mechanism, we conduct direct numerical …
[HTML][HTML] A parametric and feasibility study for data sampling of the dynamic mode decomposition: Spectral insights and further explorations
The present work extends the parametric investigation on the sampling nuances of dynamic
mode decomposition (DMD) under Koopman analysis. Through turbulent wakes, the study …
mode decomposition (DMD) under Koopman analysis. Through turbulent wakes, the study …
The linear-time-invariance notion of the Koopman analysis. Part 2. Dynamic Koopman modes, physics interpretations and phenomenological analysis of the prism …
This serial work presents a linear-time-invariance (LTI) notion to the Koopman analysis,
finding consistent and physically meaningful Koopman modes and addressing a long …
finding consistent and physically meaningful Koopman modes and addressing a long …
Types of quantum turbulence
CF Barenghi, HAJ Middleton-Spencer… - AVS Quantum …, 2023 - pubs.aip.org
We collect and describe the observed geometrical and dynamical properties of turbulence in
quantum fluids, particularly superfluid helium and atomic condensates for which more …
quantum fluids, particularly superfluid helium and atomic condensates for which more …
[HTML][HTML] Establishing direct phenomenological connections between fluid and structure by the Koopman-Linearly Time-Invariant analysis
In this work, we introduce a novel data-driven formulation, the Koopman-Linearly Time-
Invariant (Koopman-LTI) analysis, for analyzing Fluid-Structure Interactions (FSI). An …
Invariant (Koopman-LTI) analysis, for analyzing Fluid-Structure Interactions (FSI). An …
Comparing local energy cascade rates in isotropic turbulence using structure-function and filtering formulations
Comparing local energy cascade rates in isotropic turbulence using structure-function and
filtering formulations Page 1 J. Fluid Mech. (2024), vol. 980, A42, doi:10.1017/jfm.2023.1066 …
filtering formulations Page 1 J. Fluid Mech. (2024), vol. 980, A42, doi:10.1017/jfm.2023.1066 …
Effects of streamwise aspect ratio on the spatio-temporal characteristics of flow around rectangular cylinders
Turbulent flows over rectangular cylinders with streamwise aspect ratios (AR) of 1, 2 and 4
were experimentally studied using time-resolved particle image velocimetry at a Reynolds …
were experimentally studied using time-resolved particle image velocimetry at a Reynolds …