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Spectral proper orthogonal decomposition of compressor tip leakage flow [PDF]
The Physics of Fluids, 2021 To identify the spatiotemporal coherent structure of compressor tip leakage flow, spectral proper orthogonal decomposition (SPOD) is performed on the near-tip flow field and the blade surface pressure of a low-speed compressor rotor.
Xiao He +3 more
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Dissipation-optimized proper orthogonal decomposition [PDF]
Physics of Fluids, 2023 We present a formalism for dissipation-optimized decomposition of the strain rate tensor (SRT) of turbulent flow data using Proper Orthogonal Decomposition (POD). The formalism includes a novel inverse spectral SRT operator allowing the mapping of the resulting SRT modes to corresponding velocity fields, which enables a complete dissipation-optimized ...
P. J. Olesen +4 more
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Gappy Spectral Proper Orthogonal Decomposition [PDF]
SSRN Electronic Journal, 2022 Experimental spatio-temporal flow data often contain gaps or other types of undesired artifacts. To reconstruct flow data in the compromised or missing regions, a data completion method based on spectral proper orthogonal decomposition (SPOD) is developed.
Akhil Nekkanti, Oliver T. Schmidt
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Bridge Health Monitoring Using Proper Orthogonal Decomposition and Transfer Learning
Applied Sciences, 2023 This study focuses on developing and examining the effectiveness of Transfer Learning (TL) for structural health monitoring (SHM) systems that transfer knowledge about damage states from one structure (i.e., the source domain) to another structure (i.e.,
Samira Ardani +2 more
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Physics-driven proper orthogonal decomposition: A simulation methodology for partial differential equations [PDF]
MethodsX, 2023 A simulation methodology derived from a learning algorithm based on Proper Orthogonal Decomposition (POD) is presented to solve partial differential equations (PDEs) for physical problems of interest.
Alessandro Pulimeno +6 more
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AIP Advances, 2020 A common interpretation is presented for four powerful modal decomposition techniques: “proper orthogonal decomposition,” “smooth orthogonal decomposition,” “state-variable decomposition,” and “dynamic mode decomposition.” It is shown that, in certain ...
Arham Amin Khan +2 more
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Guide to Spectral Proper Orthogonal Decomposition
AIAA Journal, 2020 This paper discusses the spectral proper orthogonal decomposition and its use in identifying modes, or structures, in flow data.
Schmidt, Oliver T., Colonius, Tim
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Spectral proper orthogonal decomposition using multitaper estimates
Theoretical and Computational Fluid Dynamics, 2022 The use of multitaper estimates for spectral proper orthogonal decomposition (SPOD) is explored. Multitaper and multitaper-Welch estimators that use discrete prolate spheroidal sequences (DPSS) as orthogonal data windows are compared to the standard SPOD algorithm that exclusively relies on weighted overlapped segment averaging, or Welch's method, to ...
O. Schmidt
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Towards Reduced Order Models via Robust Proper Orthogonal Decomposition to capture personalised aortic haemodynamics. [PDF]
J Biomech, 2023 Chatpattanasiri C +4 more
europepmc +3 more sources
Thermal convection inside an oscillating cube analysed with proper orthogonal decomposition
Mechanical Engineering Journal, 2015 We reveal the fundamental and dominant flow structures of thermal convection in a cubic cavity under forced oscillation heated differentially by analysing the flow field with the proper orthogonal decomposition (referred to as POD).
Keisuke TATSUMOTO +3 more
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