Results 31 to 40 of about 113,908 (298)

Numerical investigation on the cavitating wake flow around a cylinder based on proper orthogonal decomposition

open access: yesFrontiers in Energy Research, 2023
The non-cavitating and cavitating wake flow of a circular cylinder, which contains multiscale vortices, is numerically investigated by Large Eddy Simulation combined with the Schnerr–Sauer cavitation model in this paper.
Guangjian Zhang   +4 more
doaj   +1 more source

Spectral proper orthogonal decomposition [PDF]

open access: yes, 2015
The identification of coherent structures from experimental or numerical data is an essential task when conducting research in fluid dynamics. This typically involves the construction of an empirical mode base that appropriately captures the dominant ...
Oberleithner, Kilian   +2 more
core   +2 more sources

Estimation of damage severity in rigid connection of steel moment frames using the Proper Orthogonal Decomposition and the PSO optimization algorithm [PDF]

open access: yesمهندسی عمران شریف, 2021
One of the most important issues in damage detection is determining the severity of damages. Speed and accuracy in determining the severity of damages depend on the measurement noise.
T. Teimoori, M. Mahmoudi
doaj   +1 more source

Model Order Reduction of Non-Linear Magnetostatic Problems Based on POD and DEI Methods [PDF]

open access: yes, 2014
In the domain of numerical computation, Model Order Reduction approaches are more and more frequently applied in mechanics and have shown their efficiency in terms of reduction of computation time and memory storage requirements. One of these approaches,
CLENET, Stéphane, HENNERON, Thomas
core   +3 more sources

Phase-Averaging Methods for the Natural Flowfield of a Fluidic Oscillator [PDF]

open access: yes, 2015
The presented study examines various methods for phase averaging the naturally oscillating flowfield of a scaled-up fluidic oscillator. No external trigger is employed to control the oscillation of the flow.
Nayeri, Christian Navid   +3 more
core   +1 more source

Reduced-Order Model for an Impacting Beam using the Karhunen-Loµeve Expansion

open access: yesTrends in Computational and Applied Mathematics, 2002
The Karhunen-Loµeve expansion (KLE), also known in the literature as the proper orthogonal decomposition, is a powerful tool for the model reduction of structural systems.
C. WOLTER, M.A. TRINDADE, R. SAMPAIO
doaj   +1 more source

Comparative Study on Modal Decomposition Methods of Unsteady Separated Flow in Compressor Cascade

open access: yesXibei Gongye Daxue Xuebao, 2020
The present work investigated the vortex structure and fluctuation frequency characteristics generated by boundary layer separation of a high-load compressor cascade using modal decomposition methods.

doaj   +1 more source

Simulation of hyperelastic materials in real-time using Deep Learning [PDF]

open access: yes, 2019
The finite element method (FEM) is among the most commonly used numerical methods for solving engineering problems. Due to its computational cost, various ideas have been introduced to reduce computation times, such as domain decomposition, parallel ...
Cotin, Stéphane   +2 more
core   +5 more sources

Cavitation regime detection through Proper Orthogonal Decomposition: dynamics analysis of the sheet cavity on a grooved convergent-divergent nozzle [PDF]

open access: yes, 2014
The unsteady character of the sheet cavity dynamics on the suction side of hydrofoils, on convergent–divergent nozzles or on blades in turbines and propellers is responsible for many issues like erosion, noise and vibrations. This two-phase flow dynamics
BAKIR, Farid   +3 more
core   +6 more sources

Asymptotic Stability of POD based Model Predictive Control for a semilinear parabolic PDE [PDF]

open access: yes, 2013
In this article a stabilizing feedback control is computed for a semilinear parabolic partial differential equation utilizing a nonlinear model predictive (NMPC) method.
Alla, Alessandro, Volkwein, Stefan
core   +3 more sources

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