Fourier spectral‐timing techniques for the study of accreting black holes
Sign Up to like & getrecommendations! Published in 2022 at "Astronomische Nachrichten"
DOI: 10.1002/asna.20230002
Abstract: The X-ray signal from active galactic nuclei and black hole X-ray binaries is highly variable on a range of timescales. This variability can be exploited to map the region of interest close to the black… read more here.
Keywords: black hole; fourier spectral; spectral timing; timing techniques ... See more keywords
Stability and error estimates of the SAV Fourier-spectral method for the phase field crystal equation
Sign Up to like & getrecommendations! Published in 2020 at "Advances in Computational Mathematics"
DOI: 10.1007/s10444-020-09789-9
Abstract: We consider fully discrete schemes based on the scalar auxiliary variable (SAV) approach and stabilized SAV approach in time and the Fourier-spectral method in space for the phase field crystal (PFC) equation. Unconditionally, energy stability… read more here.
Keywords: fourier spectral; phase field; spectral method; field crystal ... See more keywords
A Second-Order Operator Splitting Fourier Spectral Method for Models of Epitaxial Thin Film Growth
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Scientific Computing"
DOI: 10.1007/s10915-016-0340-4
Abstract: In this paper, we develop an operator splitting Fourier spectral method for models of epitaxial thin film growth with and without slope selection. A main idea of the method is to split the original equation… read more here.
Keywords: fourier spectral; splitting fourier; method; spectral method ... See more keywords
Conservative Fourier spectral scheme for higher order Klein-Gordon-Schrödinger equations
Sign Up to like & getrecommendations! Published in 2020 at "Applied Numerical Mathematics"
DOI: 10.1016/j.apnum.2020.05.015
Abstract: Abstract In this paper, the conservative Fourier spectral scheme is presented for higher order Klein-Gordon-Schrodinger (KGS) system with periodic boundary condition. First, using the Fourier collocation scheme in space, we obtain an conservative Fourier spectral… read more here.
Keywords: fourier spectral; higher order; scheme; spectral scheme ... See more keywords
Ex-post Analysis of the WEC Control Competition Results Using a Fourier Spectral Control Approach
Sign Up to like & getrecommendations! Published in 2020 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2020.12.1197
Abstract: Abstract The wave energy converter control competition (WECCCOMP) allowed several real-time control approaches to be assessed, both in numerical and physical experiments. The solution retained by IFP Energies Nouvelles (IFPeN), which won the numerical simulation… read more here.
Keywords: spectral control; fourier spectral; control; post analysis ... See more keywords
Fourier spectral-based modal curvature analysis and its application to damage detection in beams
Sign Up to like & getrecommendations! Published in 2017 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2016.07.005
Abstract: Abstract In this paper, a simple Fourier spectral-based method is proposed to calculate the modal curvature (MC) of beams instead of the traditional central difference method. Based on the present method, damages in beam-like structures… read more here.
Keywords: damage detection; fourier spectral; spectral based; present method ... See more keywords
On the time-splitting Fourier spectral method for the coupled Klein-Gordon-Schrödinger equations in the quantum field theory
Sign Up to like & getrecommendations! Published in 2017 at "Engineering Computations"
DOI: 10.1108/ec-04-2017-0132
Abstract: Purpose The purpose of this paper is to consider the time-splitting Fourier spectral (TSFS) method to solve the fractional coupled Klein–Gordon–Schrodinger (K-G-S) equations. A time-splitting spectral approach is applied for discretizing the Schrodinger-like equation and… read more here.
Keywords: fourier spectral; splitting fourier; time splitting; time ... See more keywords
Investigation of Relationship between the Response and Fourier Spectral Ratios Based on Statistical Analyses of Strong-Motion Records
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Earthquake and Tsunami"
DOI: 10.1142/s1793431121500081
Abstract: In both seismic design and probabilistic seismic-hazard analyses, site effects are typically characterized as the ratio of the response spectral ordinate on the ground surface to that on the bedrock based on the scaling law… read more here.
Keywords: fourier spectral; response; spectral ratios; investigation relationship ... See more keywords
A Comparison of Fourier Spectral Iterative Perturbation Method and Finite Element Method in Solving Phase-Field Equilibrium Equations
Sign Up to like & getrecommendations! Published in 2017 at "Communications in Computational Physics"
DOI: 10.4208/cicp.oa-2016-0114
Abstract: This paper systematically compares the numerical implementation and computational cost between the Fourier spectral iterative perturbation method (FSIPM) and the finite element method (FEM) in solving partial differential equilibrium equations with inhomogeneous material coefficients and… read more here.
Keywords: spectral iterative; fourier spectral; iterative perturbation; equilibrium equations ... See more keywords