Results 71 to 80 of about 166 (127)

A broad class of conservative numerical methods for dispersive wave equations

open access: yes, 2020
We develop a general framework for designing conservative numerical methods based on summation by parts operators and split forms in space, combined with relaxation Runge-Kutta methods in time.
Ketcheson, David I.   +2 more
core   +1 more source

Stability under Galerkin truncation of A-stable Runge--Kutta semidiscretizations in time [PDF]

open access: yes, 2017
We consider semilinear evolution equations for which the linear part is normal and generates a strongly continuous semigroup and the nonlinear part is sufficiently smooth on a scale of Hilbert spaces.
Wulff, C
core   +1 more source

The Norsett time integration methodology for finite element transient analysis

open access: yes, 2002
This paper presents a set of methods for time integration of problems arising from finite element semidiscretizations. The purpose is to obtain computationally efficient methods which possess higher-order accuracy and controllable dissipation in the ...
MANCUSO, Massimo, Ubertini F.
core   +1 more source

Analysis of semidiscretization of the compressible Navier–Stokes equations

open access: yesJournal of Mathematical Analysis and Applications, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Analysis and Implementation of Numerical Methods for Solving Ordinary Differential Equations [PDF]

open access: yes, 2017
Numerical methods to solve initial value problems of differential equations progressed quite a bit in the last century. We give a brief summary of how useful numerical methods are for ordinary differential equations of first and higher order.
Rana, Muhammad Sohel
core  

Approximate momentum conservation for spatial semidiscretizations of nonlinear wave equations

open access: yes, 2002
We prove that a standard second order finite difference uniform space discretization of the nonlinear wave equation with periodic boundary conditions, analytic nonlinearity, and analytic initial data conserves moentum up to an error which is ...
Marcel Oliver   +2 more
core  

Many-Stage Optimal Stabilized Runge-Kutta Methods for Hyperbolic Partial Differential Equations

open access: yes
A novel optimization procedure for the generation of stability polynomials of stabilized explicit Runge-Kutta methods is devised. Intended for semidiscretizations of hyperbolic partial differential equations, the herein developed approach allows the ...
Gassner, Gregor J.   +2 more
core   +1 more source

Quantile optimization in semidiscrete optimal transport

open access: yes
Optimal transport is the problem of designing a joint distribution for two random variables with fixed marginals. In virtually the entire literature on this topic, the objective is to minimize expected cost. This paper is the first to study a variant in which the goal is to minimize a quantile of the cost, rather than the mean.
Zhu, Yinchu, Ryzhov, Ilya O.
openaire   +2 more sources

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