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It is well known that Forward Time and Centred in Space (FTCS) scheme for scalar Hyperbolic Conservation Law (HCL) is unconditionally unstable. The main contribution of this work to show that FTCS is conditionally stable for HCL. A new…

数值分析 · 数学 2015-03-10 Ritesh Kumar Dubey

We present a class of hybrid FD-FV (finite difference and finite volume) methods for solving general hyperbolic conservation laws written in first-order form. The presentation focuses on one- and two-dimensional Cartesian grids; however,…

数值分析 · 数学 2016-11-29 Xianyi Zeng

We apply the stochastic variational method to the action of the ideal fluid and showed that the Navier-Stokes equation is derived. In this variational method, the effect of dissipation is realized as the direct consequence of the…

统计力学 · 物理学 2011-11-28 T. Koide

We introduce a two time-scale scheme which allows to extend the method of minimizing movements to hyperbolic problems. This method is used to show the existence of weak solutions to a fluid-structure interaction problem between a nonlinear,…

偏微分方程分析 · 数学 2020-08-12 Barbora Benešová , Malte Kampschulte , Sebastian Schwarzacher

We study pathwise entropy solutions for scalar conservation laws with inhomogeneous fluxes and quasilinear multiplicative rough path dependence. This extends the previous work of Lions, Perthame and Souganidis who considered spatially…

偏微分方程分析 · 数学 2014-06-16 Benjamin Gess , Panagiotis E. Souganidis

We derive and study a Lax--Friedrichs type finite volume method for a large class of nonlocal continuity equations in multiple dimensions. We prove that the method converges weakly to the measure-valued solution, and converges strongly if…

数值分析 · 数学 2018-04-26 Neelabja Chatterjee , Ulrik Skre Fjordholm

The Lax-Wendroff method is a single step method for evolving time dependent solutions governed by partial differential equations, in contrast to Runge- Kutta methods that need multiple stages per time step. We develop a flux reconstruction…

数值分析 · 数学 2022-08-10 Arpit Babbar , Sudarshan Kumar Kenettinkara , Praveen Chandrashekar

In this article we show the existence of a random-field solution to linear stochastic partial differential equations whose partial differential operator is hyperbolic and has variable coefficients that may depend on the temporal and spatial…

概率论 · 数学 2017-10-31 Alessia Ascanelli , André Süß

A new linear relaxation system for nonconservative hyperbolic systems is introduced, in which a nonlocal source term accounts for the nonconservative product of the original system. Using an asymptotic analysis the relaxation limit and its…

数值分析 · 数学 2023-11-08 Niklas Kolbe , Michael Herty , Siegfried Müller

The Osher-Chakrabarthy family of linear flux-modification schemes is considered. Improved lower bounds on the compression factors are provided, which suggest the viability of using the unlimited version. The LLF flux formula is combined…

广义相对论与量子宇宙学 · 物理学 2009-02-12 C. Bona , C. Bona-Casas , J. Terradas

In this article, we study the large time behavior of solutions of first-order Hamilton-Jacobi Equations, set in a bounded domain with nonlinear Neumann boundary conditions, including the case of dynamical boundary conditions. We establish…

偏微分方程分析 · 数学 2015-05-30 Guy Barles , Hiroyoshi Mitake , Hitoshi Ishii

In this paper hyperbolic partial differential equations with random coefficients are discussed. We consider the challenging problem of flux functions with coefficients modeled by spatiotemporal random fields. Those fields are given by…

偏微分方程分析 · 数学 2024-11-22 Andrea Barth , Franz Georg Fuchs

In this article we present an a posteriori error estimator for the spatial-stochastic error of a Galerkin-type discretisation of an initial value problem for a random hyperbolic conservation law. For the stochastic discretisation we use the…

数值分析 · 数学 2019-02-22 Jan Giesselmann , Fabian Meyer , Christian Rohde

Consider two hyperbolic systems of conservation laws in one space dimension with the same eigenvalues and (right) eigenvectors. We prove that solutions to Cauchy problems with the same initial data differ at third order in the total…

偏微分方程分析 · 数学 2018-04-18 Rinaldo M. Colombo , Graziano Guerra

Solutions to hyperbolic conservation laws can be approximated in many different ways: by vanishing viscosity, relaxations, discrete or semi-discrete numerical schemes, approximation with a nonlocal flux, etc$\ldots$ For some of these…

偏微分方程分析 · 数学 2026-05-04 Alberto Bressan , Laura Caravenna , Wen Shen

The study of uncertainty propagation poses a great challenge to design numerical solvers with high fidelity. Based on the stochastic Galerkin formulation, this paper addresses the idea and implementation of the first flux reconstruction…

计算物理 · 物理学 2021-12-14 Tianbai Xiao , Jonas Kusch , Julian Koellermeier , Martin Frank

Conservation and consistency are fundamental properties of discretizations of systems of hyperbolic conservation laws. Here, these concepts are extended to the realm of iterative methods by formally defining locally conservative and flux…

数值分析 · 数学 2024-01-11 Viktor Linders , Philipp Birken

In this paper, we propose a mass conservative semi-Lagrangian finite difference scheme for multi-dimensional problems without dimensional splitting. The semi-Lagrangian scheme, based on tracing characteristics backward in time from grid…

数值分析 · 数学 2016-07-26 Tao Xiong , Giovanni Russo , Jing-Mei Qiu

We introduce some sparse grids interpolations used in Semi-Lagrangian schemes for linear and fully non-linear diffusion Hamilton Jacobi Bellman equations arising in stochastic control. We prove that the method introduced converges toward…

最优化与控制 · 数学 2014-08-20 Xavier Warin

We introduce stabilized spline collocation schemes for the numerical solution of nonlinear, hyperbolic conservation laws. A nonlinear, residual-based viscosity stabilization is combined with a projection stabilization-inspired linear…

数值分析 · 数学 2023-07-18 Ryan M. Aronson , John A. Evans