[HTML][HTML] 动力学模态分解及其在流体力学中的应用

寇家庆, 张伟伟 - 空气动力学学报, 2018 - html.rhhz.net
随着计算流体力学和先进流动测试技术的发展, 流动的刻画越来越精细, 伴随而来的海量流场
信息的模态提取与复杂动力学特征的模型化成为当前流体力学的研究热点. 动力学模态分解 …

A reduced-order model for compressible flows with buffeting condition using higher order dynamic mode decomposition with a mode selection criterion

J Kou, S Le Clainche, W Zhang - Physics of Fluids, 2018 - pubs.aip.org
This study proposes an improvement in the performance of reduced-order models (ROMs)
based on dynamic mode decomposition to model the flow dynamics of the attractor from a …

Dynamic mode decomposition with exogenous input for data-driven modeling of unsteady flows

J Kou, W Zhang - Physics of fluids, 2019 - pubs.aip.org
This work proposes a data-driven reduced-order modeling algorithm for complex, high-
dimensional, and unsteady fluid systems with exogenous input and control. This algorithm is …

On the wake flow behind a sphere in a pipe flow at low Reynolds numbers

G Yin, MC Ong - Physics of Fluids, 2020 - pubs.aip.org
Numerical simulations are carried out to investigate the flow around a stationary sphere in a
pipe. Seven sphere diameters d= 0.1D–0.9D (D is the diameter of the pipe) are chosen to …

Predictive and Stochastic Reduced Order Modelling of Wind Turbine Wake Dynamics

SJ Andersen, JP Murcia Leon - Wind Energy Science …, 2022 - wes.copernicus.org
This article presents a reduced order model of the highly turbulent wind turbine wake
dynamics. The model is derived using a database of Large Eddy Simulations (LES), which …

[PDF][PDF] From the POD-Galerkin method to sparse manifold models

JC Loiseau, S Brunton, B Noack - Handbook of Model Order …, 2021 - library.oapen.org
Reduced-ordermodelsareessentialfortheaccurateand…, estimation, and control of complex
systems. This is especially true in fluid dynamics, where the fully resolved state space may …

Recursive dynamic mode decomposition for the flow around two square cylinders in tandem configuration

W Stankiewicz - Journal of Fluids and Structures, 2022 - Elsevier
A recent approach in modelling coherent structures in fluid flows, called Recursive Dynamic
Mode Decomposition, is presented on the example of the flow around two square cylinders …

Dynamics and long-time behavior of gas–solid flows on recurrent-transient backgrounds

T Lichtenegger, P Kieckhefen, S Heinrich… - Chemical engineering …, 2019 - Elsevier
Gas–solid fluidized beds exhibit characteristic, reappearing patterns. External parameter
variations or coupling between internal processes superpose a transient behavior on top of …

Surrogate Markov Models for Validation and Comparative Analysis of Proper Orthogonal Decomposition and Dynamic Mode Decomposition Reduced Order Models

WL Rickman - 2024 - search.proquest.com
Reduced order modeling (ROM) methods, such as those based upon Proper Orthogonal
Decomposition (POD) and Dynamic Mode Decomposition (DMD), offer data-based …

Modelling and simulation of drag forces of non-spherical particles moving towards a surface in polymer melt flows

E Agaliotis, C Bernal - Colloid and Interface Science Communications, 2017 - Elsevier
This work deals with the drag forces acting on non-spherical particles translating normal to a
surface in a polymer melt in which the particle–surface distance is small compared with …