Results 31 to 40 of about 137,250 (253)
A Tutorial on the Proper Orthogonal Decomposition [PDF]
, 2019 This tutorial introduces the Proper Orthogonal Decomposition (POD) to engineering students and researchers interested in its use in fluid dynamics and aerodynamics.
Chatterjee A. +10 more
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An Ensemble-Proper Orthogonal Decomposition Method for the Nonstationary Navier-Stokes Equations [PDF]
, 2016 The definition of partial differential equation (PDE) models usually involves a set of parameters whose values may vary over a wide range. The solution of even a single set of parameter values may be quite expensive.
Gunzburger, Max +2 more
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A Group Condensation Method Based on Proper Orthogonal Decomposition
Yuanzineng kexue jishu, 2023 The group condensation is a key process of the two-step method and is the guarantee of efficiency of the two-step method. However, the group condensation of the two-step method also reduces the energy resolution and leads to the calculation errors.
WU Shifu;ZHANG Qian;ZHANG Jinchao;ZHAO Qiang
doaj
Acceleration of Gas Reservoir Simulation Using Proper Orthogonal Decomposition
Geofluids, 2018 High-precision and high-speed reservoir simulation is important in engineering. Proper orthogonal decomposition (POD) is introduced to accelerate the reservoir simulation of gas flow in single-continuum porous media via establishing a reduced-order model
Yi Wang, Bo Yu, Ye Wang
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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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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 ...
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Artificial viscosity proper orthogonal decomposition
Mathematical and Computer Modelling, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Borggaard, Jeff +2 more
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Investigation of the three-dimensional turbulent near-wake structure past a flat plate by tomographic PIV at high Reynolds number [PDF]
, 2014 This paper reports an experimental investigation of the high-Reynolds number turbulent flow pasta thin flat plate with sharpuntapered edges,by means of tomographic PIV.
Braza, Marianna +5 more
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Proper orthogonal decomposition for optimality systems [PDF]
ESAIM: Mathematical Modelling and Numerical Analysis, 2008 The authors consider optimal control problems of the form \[ \min J(y,u)\quad\text{s.t. }y_t(t)= F(y(t))+ B(u(t)),\;y(0)= y_0, \] where the differential equation is considered in weak form in a separable Hilbert space of functions. For this problems, a method is proposed which avoids the problem of unmodelled dynamics in the proper orthogonal ...
Kunisch, Karl, Volkwein, Stefan
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Modeling of Transitional Channel Flow Using Balanced Proper Orthogonal Decomposition
, 2007 We study reduced-order models of three-dimensional perturbations in linearized channel flow using balanced proper orthogonal decomposition (BPOD). The models are obtained from three-dimensional simulations in physical space as opposed to the traditional ...
Clarence W. Rowley +8 more
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