Results 21 to 30 of about 571 (177)

Generalized Haar wavelet operational matrix method for solving hyperbolic heat conduction in thin surface layers

Results in Physics, 2018
It is remarkably known that one of the difficulties encountered in a numerical method for hyperbolic heat conduction equation is the numerical oscillation within the vicinity of jump discontinuities at the wave front.
Suazlan Mt Aznam, M.S.H. Chowdhury
doaj   +1 more source

A pseudospectral method for Option Pricing with Transaction Costs under Exponential Utility [PDF]

, 2021
This paper concerns the design of a Fourier based pseudospectral numerical method for the model of European option pricing with transaction costs under exponential utility derived by Davis, Panas and Zariphopoulou in Davis et al. (1993).
Gatón Bustillo, Víctor, Frutos Baraja, Francisco Javier de   +1 more
core   +1 more source

GPU Parallelization of a Hybrid Pseudospectral Geophysical Turbulence Framework Using CUDA

Atmosphere, 2020
An existing hybrid MPI-OpenMP scheme is augmented with a CUDA-based fine grain parallelization approach for multidimensional distributed Fourier transforms, in a well-characterized pseudospectral fluid turbulence code.
Duane Rosenberg, Pablo D. Mininni, Raghu Reddy, Annick Pouquet   +3 more
doaj   +1 more source

Spectral Transmission Characteristics of Andvanced Amplitude Modulation Formats

Communications, 2013
In this paper we focus our attention on numerical investigation of high-order amplitude modulation format in single-channel transmission systems utilizing different kinds of optical fibers.
Daniel Benedikovic, Jan Litvik, Michal Kuba, Milan Dado   +3 more
doaj   +1 more source

Mixed Fourier-Legendre Spectral Methods for the Multiple Solutions of the Schrodinger Equation on the Unit Disk

Mathematical Modelling and Analysis, 2017
In this paper, we first compute the multiple non-trivial solutions of the Schrodinger equation on a unit disk, by using the Liapunov-Schmidt reduction and symmetry-breaking bifurcation theory, combined with the mixed Fourier-Legendre spectral and ...
Zhao-Xiang Li, Ji Lao, Zhong-Qing Wang
doaj   +1 more source

Fourier-Chebyshev pseudospectral methods for the two-dimensional Navier-Stokes equations [PDF]

ESAIM: Mathematical Modelling and Numerical Analysis, 1995
Summary: Fourier-Chebyshev pseudospectral approximation for the two-dimensional unsteady Navier-Stokes equations is analyzed. The generalized stability and convergence are proved strictly, and numerical results are presented.
Guo, Benyu, Li, Jian
openaire   +1 more source

A Fourier Pseudospectral Method for Solving Coupled Viscous Burgers Equations

Computational Methods in Applied Mathematics, 2009
AbstractThe Fourier pseudo-spectral method has been studied for a one- dimensional coupled system of viscous Burgers equations. Two test problems with known exact solutions have been selected for this study. In this paper, the rate of con- vergence in time and error analysis of the solution of the first problem has been studied, while the numerical ...
Abdur Rashid, Ahmad Izani Bin Md. Ismail
openaire   +1 more source

Fractional Laplacian Viscoacoustic Wave Equation Low-Rank Temporal Extrapolation

IEEE Access, 2019
Description of seismic wave attenuation is a hot topic in the geophysical area, and it is the basis of the attenuation-compensated seismic imaging technique, which aims to retrieve a high-resolution subsurface image for geological structure analysis and ...
Hanming Chen, Hui Zhou, Shuqi Jiang, Ying Rao   +3 more
doaj   +1 more source

Vegetated Canopy Heterogeneity Footprints in the Roughness Sublayer

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 10, 28 May 2026.
Abstract Turbulent flows over horizontally homogeneous rough surfaces are categorized as rough‐wall boundary layer flows, while flows over homogeneous vegetated canopies are better described through a mixing‐layer analogy. At present, numerous studies have investigated canopy density as a transition mechanism between rough‐wall and mixing‐layer‐type ...
Giulia Salmaso, Raúl B. Cal, Marc Calaf
wiley   +1 more source

Forward and Adjoint Calculations of Gravitational Potential in Heterogeneous, Aspherical Planets

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract We have developed a computational package for the calculation of numerically exact internal and external gravitational potential, its functional derivatives and sensitivity kernels, in an aspherical, heterogeneous planet. We detail our implementation, utilizing a transformation of the Poisson equation into a spherical reference domain, as well
Alex D. C. Myhill, Matthew A. Maitra, David Al‐Attar   +2 more
wiley   +1 more source