Results 211 to 220 of about 114,105 (252)

A Method of Flow Field Reconstruction via Proper Orthogonal Decomposition

2010 2nd International Conference on Information Engineering and Computer Science, 2010
This paper presents a method for constructing flow fields with proper orthogonal decomposition (POD) basis functions or modes with great reduction on the computational cost. Using this approach, it is possible to construct the entire aerodynamic flow fields from the knowledge of computed aerodynamic data or measured flow data specified on the ...
Mao Ye, Min Xu, Hao Liu, Weigang Yao
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A modified proper orthogonal decomposition method for flow dynamic analysis

Computers & Fluids, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhao, Yijia, Zhao, Ming, Li, Xiaojian, Liu, Zhengxian, Du, Juan   +4 more
openaire   +2 more sources

Assembly pin factor parameterization method based on the proper orthogonal decomposition

Annals of Nuclear Energy, 2020
Abstract The proper orthogonal decomposition (POD) is introduced into the assembly pin factor parameterization. The decomposition is performed first to the pin factors with specific discrete state parameters to capture the spatial characteristic of pin factors.
Zhuo Li, Yu Ma, Qian Zhang, Liangzhi Cao, Hongchun Wu, Yunzhao Li   +5 more
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Application of the Proper Orthogonal Decomposition Method for Cracked Rotors

Journal of Computational and Nonlinear Dynamics, 2018
The application of the proper orthogonal decomposition (POD) method to the vibration response of a cracked rotor system is investigated. The covariance matrices of the horizontal and vertical whirl amplitudes are formulated based on the numerical and experimental whirl response data for the considered cracked rotor system.
Mohammad A. Al-Shudeifat, Ayesha Al Mehairi, Adnan S. Saeed, Shadi Balawi   +3 more
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A critical review of flow field analysis methods involving proper orthogonal decomposition and quadruple proper orthogonal decomposition for internal combustion engines

International Journal of Engine Research, 2019
Experimental techniques like particle image velocimetry provide a powerful technical support for the analysis of the spatial and temporal evolution of the flow field in internal combustion engines. Such techniques can be used to investigate both ensemble-averaged flow structures and their cyclic variations.
Rulli, Federico, Fontanesi, Stefano, d’Adamo, Alessandro, Berni, Fabio   +3 more
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Proper orthogonal decomposition method for multiscale elliptic PDEs with random coefficients

Journal of Computational and Applied Mathematics, 2020
The authors develop an efficient multiscale reduced basis method to solve the multiscale elliptic boundary value problem \[ -\nabla\cdot(a^\varepsilon(x,\omega)\nabla u^\varepsilon(x,\omega))=f(x),\ x\in D,\,\omega\in \varOmega, \quad u^\varepsilon(x,\omega)=0, \] where \(D\subset \mathbb{R}^d\) is bounded, \((\varOmega,\mathcal{F},\mathbb{P})\) is a ...
Dingjiong Ma, Wai-ki Ching, Zhiwen Zhang
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Adjoint-Based Two-Step Optimization Method Using Proper Orthogonal Decomposition and Domain Decomposition

AIAA Journal, 2018
A modified two-step method for aerodynamic shape optimization is proposed, where proper orthogonal decomposition and automatic domain-decomposition techniques are adopted to accelerate flow and adj...
Jichao Li, Jinsheng Cai, Kun Qu
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Application of proper orthogonal decomposition methods in reactive pore diffusion simulations

The Canadian Journal of Chemical Engineering, 2014
Reactive pore diffusion is an important process in automotive exhaust‐gas aftertreatment modelling the overall conversion of pollutants. It features highly nonlinear source terms from chemical reactions coupled with transport processes. This work examines the application of model reduction by proper orthogonal decomposition.
Martin Ullmann, Uwe Prüfert, Jens Seidel, Oliver G. Ernst, Christian Hasse   +4 more
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A Proper Orthogonal Decomposition Analysis Method for Multimedia Heat Conduction Problems

Journal of Heat Transfer, 2016
In this paper, a new proper orthogonal decomposition (POD) analysis method is proposed for numerical analysis of thermal mechanical engineering problems consisting of multiple media. After the creation of a heat conduction solution database for each medium, the “snapshot” approach of the POD technique is applied to facilitate reduced-order modeling ...
Xiaowei Gao, Jinxiu Hu, Shizhang Huang
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Proper orthogonal decomposition truncation method for data denoising and order reduction

Experiments in Fluids, 2017
Proper orthogonal decomposition (POD) is used widely in experimental fluid dynamics for reducing noise in a measured flow field. The efficacy of POD is governed by the selection of modes used for the velocity field reconstruction. Currently, the determination of which or how many modes to keep is a user-defined subjective choice, where an arbitrary ...
Melissa C. Brindise, Pavlos P. Vlachos
openaire   +1 more source