Proper Orthogonal Decomposition Methods for the Analysis of Real-Time Data: Exploring Peak Clustering in a Secondhand Smoke Exposure Intervention. [PDF]
J Comput Sci, 2015 Berardi V +7 more
europepmc +3 more sources
Unsteady characteristics analysis of compressors based on the proper orthogonal decomposition method [PDF]
AIP AdvancesAn aero-engine is often accompanied by a strong unsteady flow at near-stall condition, and increasing unsteady airflow eventually makes the engine unstable. To explore the unsteady flow characteristics, the Rotor 37 was taken as the research object.
Shan Ma +4 more
doaj +2 more sources
Investigation of the effects of length to depth ratio on open supersonic cavities using CFD and proper orthogonal decomposition. [PDF]
ScientificWorldJournal, 2013 Yilmaz I, Ayli E, Aradag S.
europepmc +3 more sources
Spectral proper orthogonal decomposition of harmonically forced turbulent flows [PDF]
Journal of Fluid Mechanics, 2023 Many turbulent flows exhibit time-periodic statistics. These include turbomachinery flows, flows with external harmonic forcing and the wakes of bluff bodies.
Liam Heidt, T. Colonius
semanticscholar +1 more source
Phase proper orthogonal decomposition of non-stationary turbulent flow [PDF]
The Physics of Fluids, 2023 A phase proper orthogonal decomposition (Phase POD) method is demonstrated, utilizing phase averaging for the decomposition of spatio-temporal behaviour of statistically non-stationary turbulent flows in an optimized manner. The proposed Phase POD method
Yisheng Zhang +4 more
semanticscholar +1 more source
Multi-scale reconstruction of turbulent rotating flows with proper orthogonal decomposition and generative adversarial networks [PDF]
Journal of Fluid Mechanics, 2022 Data reconstruction of rotating turbulent snapshots is investigated utilizing data-driven tools. This problem is crucial for numerous geophysical applications and fundamental aspects, given the concurrent effects of direct and inverse energy cascades ...
Tianyi Li +5 more
semanticscholar +1 more source
The Physics of Fluids, 2023 In this research, the cavitating flow around a NACA0015(National Advisory Committee for Aeronautics) hydrofoil obtained by the large eddy simulation method is analyzed using the proper orthogonal decomposition (POD) theory. Various fundamental mechanisms
A. Yu +4 more
semanticscholar +1 more source
Improved convergence of the spectral proper orthogonal decomposition through time shifting [PDF]
Journal of Fluid Mechanics, 2022 Spectral proper orthogonal decomposition (SPOD) is an increasingly popular modal analysis method in the field of fluid dynamics due to its specific properties: a linear system forced with white noise should have SPOD modes identical to response modes ...
D. Blanco +3 more
semanticscholar +1 more source
Proper Orthogonal Decomposition of Flow Past Parallel Twin Cylinders
气体物理, 2023 The wake flow field around the parallel twin cylinders is complex, and a variety of complex wake patterns appear at different spacings. In this paper, based on the finite volume method, a numerical simulation of the flow around two-dimensional parallel ...
Jun-hui WANG, Shu-ling TIAN
doaj +1 more source
Spectral proper orthogonal decomposition and its relationship to dynamic mode decomposition and resolvent analysis [PDF]
Journal of Fluid Mechanics, 2017 We consider the frequency domain form of proper orthogonal decomposition (POD), called spectral proper orthogonal decomposition (SPOD). Spectral POD is derived from a space–time POD problem for statistically stationary flows and leads to modes that each ...
A. Towne, O. Schmidt, T. Colonius
semanticscholar +1 more source