Výsledky vyhledávání - "Scientific Computing with specialization in Numerical Analysis"

One or two frequencies? The Iterative Filtering answers Autor Cicone, Antonio, Serra-Capizzano, Stefano, Zhou, Haomin

“…The Iterative Filtering method is a technique aimed at the decomposition of non-stationary and non-linear signals into simple oscillatory components. This…”
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Projection based summation-by-parts methods, embeddings and the pseudoinverse Autor Olsson, Pelle, Eriksson, Gustav, Mattsson, Ken

“…In the present work, we demonstrate how the pseudoinverse concept from linear algebra can be used to represent and analyze the boundary conditions of linear…”
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A high-order residual-based viscosity finite element method for incompressible variable density flow Autor Lundgren, Lukas, Nazarov, Murtazo

“…In this paper, we introduce a high-order accurate finite element method for incompressible variable density flow. The method uses high-order Taylor-Hood…”
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Fine spectral analysis of preconditioned matrices and matrix-sequences arising from stage-parallel implicit Runge-Kutta methods of arbitrarily high order Autor Dravins, Ivo, Serra-Capizzano, Stefano, Neytcheva, Maya

“…The use of high order fully implicit Runge--Kutta methods is of significant importance in the context of the numerical solution of transient partial…”
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Finite element-based invariant-domain preserving approximation of hyperbolic systems: Beyond second-order accuracy in space Autor Guermond, Jean-Luc, Nazarov, Murtazo, Popov, Bojan

“…This paper proposes an invariant-domain preserving approximation technique for nonlinear conservation systems that is high-order accurate in space and time…”
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A structure preserving numerical method for the ideal compressible MHD system Autor Dao, Tuan Anh, Nazarov, Murtazo, Tomas, Ignacio

“…We introduce a novel structure-preserving method in order to approximate the compressible ideal Magnetohydrodynamics (MHD) equations. This technique addresses…”
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Stability estimates for radial basis function methods applied to linear scalar conservation laws Autor Tominec, Igor, Nazarov, Murtazo, Larsson, Elisabeth

“…We derive stability estimates for three commonly used radial basis function (RBF) methods to solve hyperbolic time-dependent PDEs: the RBF generated finite…”
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Acoustic shape optimization using energy stable curvilinear finite differences Autor Eriksson, Gustav, Stiernström, Vidar

“…A gradient-based method for shape optimization problems constrained by the acoustic wave equation is presented. The method makes use of high-order accurate…”
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Numerical integration of mechanical forces in center-based models for biological cell populations Autor Lötstedt, Per, Mathias, Sonja

“…Center-based models are used to simulate the mechanical behavior of biological cells during embryonic development or cancer growth. To allow for the simulation…”
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The D-RBF-PU method for solving surface PDEs Autor Mir, Reyhaneh, Mirzaei, Davoud

“…In this paper a new direct RBF partition of unity (D-RBF-PU) method is developed for numerical solution of partial differential equations defined on smooth…”
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A nodal based high order nonlinear stabilization for finite element approximation of Magnetohydrodynamics Autor Dao, Tuan Anh, Nazarov, Murtazo

“…We present a novel high-order nodal artificial viscosity approach designed for solving Magnetohydrodynamics (MHD) equations. Unlike conventional methods, our…”
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Boundary and interface methods for energy stable finite difference discretizations of the dynamic beam equation Autor Eriksson, Gustav, Werpers, Jonatan, Niemelä, David, Wik, Niklas, Zethrin, Valter, Mattsson, Ken

“…We consider energy stable summation by parts finite difference methods (SBP-FD) for the homogeneous and piecewise homogeneous dynamic beam equation (DBE)…”
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Numerical solution of quantum Landau-Lifshitz-Gilbert equation Autor Azimi-Mousolou, Vahid, Mirzaei, Davoud

“…The classical Landau-Lifshitz-Gilbert (LLG) equation has long served as a cornerstone for modeling magnetization dynamics in magnetic systems, yet its…”
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A radial basis function partition of unity method for steady flow simulations Autor Bernal, Francisco, Safdari-Vaighani, Ali, Larsson, Elisabeth

“…A methodology is presented for the numerical solution of nonlinear elliptic systems in unbounded domains, consisting of three elements. First, the problem is…”
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A fully conservative and shift-invariant formulation for Galerkin discretizations of incompressible variable density flow Autor Lundgren, Lukas, Nazarov, Murtazo

“…This paper introduces a formulation of the variable density incompressible Navier-Stokes equations by modifying the nonlinear terms in a consistent way. For…”
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Fast Toeplitz eigenvalue computations, joining interpolation-extrapolation matrix-less algorithms and simple-loop theory: The preconditioned setting Autor Bogoya, M., Serra-Capizzano, S., Vassalos, P.

“…Under appropriate technical assumptions, the simple-loop theory allows to derive various types of asymptotic expansions for the eigenvalues of Toeplitz…”
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A Preconditioned MINRES Method for Optimal Control of Wave Equations and its Asymptotic Spectral Distribution Theory Autor Hon, Sean, Dong, Jiamei, Serra-Capizzano, Stefano

“…In this work, we propose a novel preconditioned Krylov subspace method for solvingan optimal control problem of wave equations, after explicitly identifying…”
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Implicit summation by parts operators for finite difference approximations of first and second derivatives Autor Mattsson, Ken, Ljungberg Rydin, Ylva

“…•Implicit first and second derivative SBP operators are presented.•Spectral-like characteristics are achieved.•Comparisons to corresponding explicit SBP…”
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A finite element based heterogeneous multiscale method for the Landau-Lifshitz equation Autor Leitenmaier, Lena, Nazarov, Murtazo

“…We present a Heterogeneous Multiscale Method for the Landau-Lifshitz equation with a highly oscillatory diffusion coefficient, a simple model for a…”
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Numerical simulation of the generalized modified Benjamin–Bona–Mahony equation using SBP-SAT in time Autor Kjelldahl, Vilma, Mattsson, Ken

“…In this paper we present high-order accurate finite difference approximations for solving the generalized modified Benjamin–Bona–Mahony (BBM) equation, a…”
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