Results 51 to 60 of about 27,402 (200)

Projection method for solving systems of linear equations using wavelet packet decomposition of the residual

open access: yesProceedings of the International Conference on Applied Innovations in IT, 2017
The work is devoted to the problem of solving large systems of linear algebraic equations with irregular structure matrices. To solve them the variant of the projection method in the Petrov-Galerkin form is proposed.
Vasily Esaulov, Roman Sinetsky
doaj   +1 more source

A numerical comparison of solvers for large-scale, continuous-time algebraic Riccati equations and LQR problems

open access: yes, 2020
In this paper, we discuss numerical methods for solving large-scale continuous-time algebraic Riccati equations. These methods have been the focus of intensive research in recent years, and significant progress has been made in both the theoretical ...
Benner, Peter   +3 more
core   +1 more source

Error estimates for a semidiscrete finite element method for fractional order parabolic equations

open access: yes, 2012
We consider the initial boundary value problem for the homogeneous time-fractional diffusion equation $\partial^\alpha_t u - \De u =0$ ($0< \alpha < 1$) with initial condition $u(x,0)=v(x)$ and a homogeneous Dirichlet boundary condition in a bounded ...
Jin, Bangti, Lazarov, Raytcho, Zhou, Zhi
core   +2 more sources

Reduced order method for finite difference modeling of cardiac propagation

open access: yesCurrent Directions in Biomedical Engineering, 2020
Efficient numerical simulation of cardiac electrophysiology is crucial for studying the electrical properties of the heart tissue. The cardiac bidomain model is the most widely accepted representation of the electrical behaviour of the heart muscle.
Khan Riasat   +2 more
doaj   +1 more source

Hybridizable discontinuous Galerkin projection methods for Navier–Stokes and Boussinesq equations [PDF]

open access: yesJournal of Computational Physics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
M.P. Ueckermann, P.F.J. Lermusiaux
openaire   +2 more sources

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

open access: yesDeep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei   +4 more
wiley   +1 more source

Symplectic Model Reduction of Hamiltonian Systems [PDF]

open access: yes, 2015
In this paper, a symplectic model reduction technique, proper symplectic decomposition (PSD) with symplectic Galerkin projection, is proposed to save the computational cost for the simplification of large-scale Hamiltonian systems while preserving the ...
Mohseni, Kamran, Peng, Liqian
core  

Coupled Fluid–Structure–Acoustic Analysis of Flow‐Induced Noise Control Using an Elastic Baffle in a Micro Channel

open access: yesEnergy Science &Engineering, EarlyView.
This research explores how fluid flow, structural movement, and sound interact in an elastic baffle system. Using a numerical approach based on the finite element method, the study analyzes how noise and vibrations change with different baffle configurations. The findings reveal that shortening the baffle by half reduces noise transmission by 9%, while
Tohid Adibi   +5 more
wiley   +1 more source

Model-reduction techniques for PDE models with Turing type electrochemical phase formation dynamics

open access: yesApplications in Engineering Science, 2021
Next-generation battery research will heavily rely on physico-chemical models, combined with deep learning methods and high-throughput and quantitative analysis of experimental datasets, encoding spectral information in space and time.
Benedetto Bozzini   +2 more
doaj   +1 more source

A high-order semi-explicit discontinuous Galerkin solver for 3D incompressible flow with application to DNS and LES of turbulent channel flow

open access: yes, 2016
We present an efficient discontinuous Galerkin scheme for simulation of the incompressible Navier-Stokes equations including laminar and turbulent flow.
Fehn, Niklas   +3 more
core   +1 more source

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