A stable fast time-stepping method for fractional integral and derivative operators

F Zeng, I Turner, K Burrage - Journal of Scientific Computing, 2018 - Springer
A unified fast time-stepping method for both fractional integral and derivative operators is
proposed. The fractional operator is decomposed into a local part with memory …

Efficient multistep methods for tempered fractional calculus: Algorithms and simulations

L Guo, F Zeng, I Turner, K Burrage… - SIAM Journal on Scientific …, 2019 - SIAM
In this work, we extend the fractional linear multistep methods in C. Lubich, SIAM J. Math.
Anal., 17 (1986), pp. 704--719 to the tempered fractional integral and derivative operators in …

A time‐domain boundary element method for the 3D dissipative wave equation: Case of Neumann problems

T Takahashi - International Journal for Numerical Methods in …, 2023 - Wiley Online Library
The present article proposes a time‐domain boundary element method (TDBEM) for the
three‐dimensional (3D) dissipative wave equation (DWE). Although the fundamental …

A new class of semi-implicit methods with linear complexity for nonlinear fractional differential equations

F Zeng, I Turner, K Burrage, GE Karniadakis - SIAM Journal on Scientific …, 2018 - SIAM
We propose a new class of semi-implicit methods for solving nonlinear fractional differential
equations and study their stability. Several versions of our new schemes are proved to be …

Efficient solution of two-dimensional wave propagation problems by CQ-wavelet BEM: algorithm and applications

L Desiderio, S Falletta - SIAM Journal on Scientific Computing, 2020 - SIAM
In this paper we consider wave propagation problems in two-dimensional unbounded
domains, including dissipative effects, reformulated in terms of space-time boundary integral …

On hybrid convolution quadrature approaches for modeling time‐domain wave problems with broadband frequency content

J Rowbottom, DJ Chappell - International Journal for Numerical …, 2021 - Wiley Online Library
We propose two hybrid convolution quadrature based discretizations of the wave equation
on interior domains with broadband Neumann boundary data or source terms. The …

Pseudospectral roaming contour integral methods for convection-diffusion equations

N Guglielmi, M López-Fernández… - Journal of Scientific …, 2021 - Springer
We generalize ideas in the recent literature and develop new ones in order to propose a
general class of contour integral methods for linear convection–diffusion PDEs and in …

Fast algorithms for convolution quadrature of Riemann-Liouville fractional derivative

J Sun, D Nie, W Deng - Applied Numerical Mathematics, 2019 - Elsevier
Recently, the numerical schemes of the Fokker-Planck equations describing anomalous
diffusion with two internal states have been proposed in Nie et al.,[23], which use …

Enhanced parallel computation for time-fractional fluid dynamics: A fast time-stepping method with Newton-Krylov-Schwarz solver

L Xia, X Jiang, F Zeng, Z Lin, S Qin, R Chen - Communications in Nonlinear …, 2024 - Elsevier
This paper presents a sum-of-exponentials domain decomposition method for the numerical
simulation of two-dimensional unsteady fluid flow and heat transfer using a time-fractional …

Numerical inverse Laplace transform for convection-diffusion equations

N Guglielmi, M López-Fernández, G Nino - Mathematics of Computation, 2020 - ams.org
In this paper a novel contour integral method is proposed for linear convection-diffusion
equations. The method is based on the inversion of the Laplace transform and makes use of …