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The Active Flux method is a finite volume method for hyperbolic conservation laws that uses both cell averages and point values as degrees of freedom. Several versions of such methods are currently under development. We focus on third order…

Numerical Analysis · Mathematics 2025-08-19 Erik Chudzik , Christiane Helzel , Amelie Porfetye

Active Flux is a recently developed numerical method for hyperbolic conservation laws. Its classical degrees of freedom are cell averages and point values at cell interfaces. These latter are shared between adjacent cells, leading to a…

Numerical Analysis · Mathematics 2023-01-11 Rémi Abgrall , Wasilij Barsukow

Active Flux is an extension of the Finite Volume method and additionally incorporates point values located at cell boundaries. This gives rise to a globally continuous approximation of the solution. Originally, the Active Flux method…

Numerical Analysis · Mathematics 2024-11-26 Rémi Abgrall , Wasilij Barsukow , Christian Klingenberg

The degrees of freedom of Active Flux are cell averages and point values along the cell boundaries. These latter are shared between neighbouring cells, which gives rise to a globally continuous reconstruction. The semi-discrete Active Flux…

Numerical Analysis · Mathematics 2025-06-05 Wasilij Barsukow , Janina Kern , Christian Klingenberg , Lisa Lechner

We propose an arbitrarily high-order accurate numerical method for conservation laws that is based on a continuous approximation of the solution. The degrees of freedom are point values at cell interfaces and moments of the solution inside…

Numerical Analysis · Mathematics 2023-01-10 Rémi Abgrall , Wasilij Barsukow

Active Flux (AF) is a recent numerical method for hyperbolic conservation laws, whose degrees of freedom are averages/moments and (shared) point values at cell interfaces. It has been noted previously in a heuristic fashion that it thus…

Numerical Analysis · Mathematics 2025-08-22 Wasilij Barsukow

The active flux (AF) method is a compact high-order finite volume method originally proposed for solving hyperbolic conservation laws, in which cell averages and point values at cell interfaces are evolved simultaneously. This paper…

Numerical Analysis · Mathematics 2025-10-14 Junming Duan

Active Flux is a third order accurate numerical method which evolves cell averages and point values at cell interfaces independently. It naturally uses a continuous reconstruction, but is stable when applied to hyperbolic problems. In this…

Numerical Analysis · Mathematics 2022-12-06 Wasilij Barsukow , Jonas P. Berberich

The Active Flux scheme is a Finite Volume scheme with additional point values distributed along the cell boundary. It is third order accurate and does not require a Riemann solver: the continuous reconstruction serves as initial data for…

Numerical Analysis · Mathematics 2021-08-09 Wasilij Barsukow , Jonas P. Berberich , Christian Klingenberg

We propose an arbitrarily high-order accurate, fully well-balanced numerical method for the one-dimensional blood flow model. The developed method employs a continuous solution representation, combining conservative and primitive…

Numerical Analysis · Mathematics 2025-02-07 Yongle Liu , Wasilij Barsukow

We present the first implementation of the Active Flux method on adaptively refined Cartesian grids. The Active Flux method is a third order accurate finite volume method for hyperbolic conservation laws, which is based on the use of point…

Numerical Analysis · Mathematics 2022-06-08 Donna Calhoun , Erik Chudzik , Christiane Helzel

Finite volume schemes for hyperbolic conservation laws require a numerical intercell flux. In one spatial dimension the numerical flux can be successfully obtained by solving (exactly or approximately) Riemann problems that are introduced…

Numerical Analysis · Mathematics 2019-08-08 Wasilij Barsukow , Jonathan Hohm , Christian Klingenberg , Philip L. Roe

Active Flux is a modified Finite Volume method that evolves additional Degrees of Freedom for each cell that are located on the interface by a non-conservative method to compute high-order approximations to the numerical fluxes through the…

Numerical Analysis · Mathematics 2024-12-10 Lukas Hensel , Gudrun Grünwald , Katharina Kormann , Rainer Grauer

The Active Flux method is a numerical method for conservation laws using a combination of cell averages and point values, based on ideas from finite volumes and finite differences. This unusual mix has been shown to work well in many…

Numerical Analysis · Mathematics 2025-07-16 Wasilij Barsukow , Christian Klingenberg , Lisa Lechner , Jan Nordström , Sigrun Ortleb , Hendrik Ranocha

We show how to combine in a natural way (i.e. without any test nor switch) the conservative and non conservative formulations of an hyperbolic system that has a conservative form. This is inspired from two different class of schemes: the…

Numerical Analysis · Mathematics 2021-10-27 Rémi Abgrall

The aim of this work is to design implicit and semi-implicit high-order well-balanced finite-volume numerical methods for 1D systems of balance laws. The strategy introduced by two of the authors in a previous paper for explicit schemes…

Numerical Analysis · Mathematics 2022-08-31 Irene Gómez-Bueno , Sebastiano Boscarino , Manuel Jesús Castro , Carlos Parés , Giovanni Russo

The Active Flux scheme is a Finite Volume scheme with additional degrees of freedom. It makes use of a continuous reconstruction and does not require a Riemann solver. An evolution operator is used for the additional degrees of freedom on…

Computational Engineering, Finance, and Science · Computer Science 2023-03-14 Oliviu Şugar-Gabor

This work focuses on the numerical solution of hyperbolic conservations laws (possibly endowed with a source term) using the Active Flux method. This method is an extension of the finite volume method. Instead of solving a Riemann Problem,…

Numerical Analysis · Mathematics 2021-05-31 Wasilij Barsukow

The active flux (AF) method is a compact high-order finite volume method that evolves cell averages and point values at cell interfaces independently. Within the method of lines framework, the point value can be updated based on Jacobian…

Numerical Analysis · Mathematics 2024-11-05 Junming Duan , Wasilij Barsukow , Christian Klingenberg

The Active Flux scheme is a finite volume scheme with additional point values distributed along the cell boundary. It is third order accurate and does not require a Riemann solver. Instead, given a reconstruction, the initial value problem…

Numerical Analysis · Mathematics 2020-11-23 Wasilij Barsukow
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