The partial fast fourier transform

JC Bowman, Z Ghoggali - Journal of Scientific Computing, 2018 - Springer
An efficient algorithm for computing the one-dimensional partial fast Fourier transform f_j= ∑
_ k= 0^ c (j) e^ 2 π ijk/N F_k fj=∑ k= 0 c (j) e 2 π ijk/NF k is presented. Naive computation of …

Hybrid Dealiasing of Complex Convolutions

N Murasko, JC Bowman - SIAM Journal on Scientific Computing, 2024 - SIAM
Efficient algorithms based on the fast Fourier transform are developed for computing linear
convolutions. A hybrid approach is described that combines the conventional practice of …

On the Feasibility of Fast Fourier Transform Separability Property for Distributed Image Processing

A Téllez-Velázquez, R Cruz-Barbosa - Scientific Programming, 2021 - Wiley Online Library
Given the high algorithmic complexity of applied‐to‐images Fast Fourier Transforms (FFT),
computational‐resource‐usage efficiency has been a challenge in several engineering …

Impact of the fracture contact area on macro-dispersion in single rough fractures

A Beaudoin, M Farhat - Comptes …, 2021 - comptes-rendus.academie-sciences …
In the scientific literature, the study of the impact of the fracture contact area on macro-
dispersion in single rough fractures is still an open question. In this work, we study …

[HTML][HTML] On the global attractor of 2D incompressible turbulence with random forcing

P Emami, JC Bowman - Journal of Differential Equations, 2018 - Elsevier
This study revisits bounds on the projection of the global attractor in the energy–enstrophy
plane for 2D incompressible turbulence [Dascaliuc, Foias, and Jolly, 2005, 2010]. In addition …

A pseudo-spectral based efficient volume penalization scheme for Cahn–Hilliard equation in complex geometries

A Sinhababu, A Bhattacharya - Mathematics and Computers in Simulation, 2022 - Elsevier
In this paper, we have developed an efficient volume penalization based diffuse-filtering
scheme to solve variable mobility based Cahn–Hilliard equation in complex geometries. The …

Analysis of the influence of averaged positive second invariant Qav of deformation tensor∇ u on the maximum dilution index Emax in steady Darcy flows through …

A Beaudoin, A Dartois, S Huberson - Advances in Water Resources, 2019 - Elsevier
Abstract Characterization of flow topology is essential to understand the effects of the
heterogeneity and dimensionality of geological formations on the mixing of inert solute …

Hybrid Dealiased Convolutions

N Murasko - 2024 - era.library.ualberta.ca
Efficient algorithms for computing linear convolutions based on the fast Fourier transform are
developed. A hybrid approach is described that combines the conventional practice of …

[PDF][PDF] Research Article On the Feasibility of Fast Fourier Transform Separability Property for Distributed Image Processing

A Téllez-Velázquez, R Cruz-Barbosa - 2021 - academia.edu
Given the high algorithmic complexity of applied-to-images Fast Fourier Transforms (FFT),
computational-resource-usage efficiency has been a challenge in several engineering …

[PDF][PDF] How to Design an Efficient Pseudospectral Code

JC Bowman - 2019 - math.ualberta.ca
How to Design an Efficient Pseudospectral Code Page 1 How to Design an Efficient
Pseudospectral Code John C. Bowman University of Alberta June 11, 2019 www.math.ualberta.ca/∼bowman/talks …