A Lagrangian discontinuous Galerkin hydrodynamic method

X Liu, NR Morgan, DE Burton - Computers & Fluids, 2018 - Elsevier
We present a new Lagrangian discontinuous Galerkin (DG) hydrodynamic method for
solving the two-dimensional gas dynamic equations on unstructured hybrid meshes. The …

A high-order Lagrangian discontinuous Galerkin hydrodynamic method for quadratic cells using a subcell mesh stabilization scheme

X Liu, NR Morgan, DE Burton - Journal of Computational Physics, 2019 - Elsevier
We present a Lagrangian discontinuous Galerkin (DG) hydrodynamic method that is up to
third-order accurate using subcell mesh stabilization (SMS) for compressible flows on …

Positivity-preserving cell-centered Lagrangian schemes for multi-material compressible flows: From first-order to high-orders. Part I: The one-dimensional case

F Vilar, CW Shu, PH Maire - Journal of Computational Physics, 2016 - Elsevier
One of the main issues in the field of numerical schemes is to ally robustness with accuracy.
Considering gas dynamics, numerical approximations may generate negative density or …

[图书][B] Numerical methods for Eulerian and Lagrangian conservation laws

B Després - 2017 - books.google.com
This book focuses on the interplay between Eulerian and Lagrangian conservation laws for
systems that admit physical motivation and originate from continuum mechanics. Ultimately …

A 3D finite element ALE method using an approximate Riemann solution

VP Chiravalle, NR Morgan - International Journal for Numerical …, 2017 - Wiley Online Library
Summary Arbitrary Lagrangian–Eulerian finite volume methods that solve a
multidimensional Riemann‐like problem at the cell center in a staggered grid hydrodynamic …

Reducing spurious mesh motion in Lagrangian finite volume and discontinuous Galerkin hydrodynamic methods

NR Morgan, X Liu, DE Burton - Journal of Computational Physics, 2018 - Elsevier
The Lagrangian finite volume (FV) cell-centered hydrodynamic (CCH) method and the
Lagrangian discontinuous Galerkin (DG) CCH method have been demonstrated to be quite …

3D level set methods for evolving fronts on tetrahedral meshes with adaptive mesh refinement

NR Morgan, JI Waltz - Journal of Computational Physics, 2017 - Elsevier
The level set method is commonly used to model dynamically evolving fronts and interfaces.
In this work, we present new methods for evolving fronts with a specified velocity field or in …

A fourth-order Lagrangian discontinuous Galerkin method using a hierarchical orthogonal basis on curvilinear grids

X Liu, NR Morgan, EJ Lieberman, DE Burton - Journal of Computational …, 2022 - Elsevier
The existing high-order Lagrangian discontinuous Galerkin (DG) hydrodynamic methods are
restricted to using quadratic meshes with quadratic polynomials (P2), which in turn, yield up …

A cell-centered Lagrangian discontinuous Galerkin method using WENO and HWENO limiter for compressible Euler equations in two dimensions

F Qing, X Yu, Z Jia, Z Li - Computational and Applied Mathematics, 2021 - Springer
This article introduces a new variant of the cell-centered Lagrangian discontinuous Galerkin
method for two-dimensional compressible flow which was proposed by Jia et al.(J Comput …

A point-centered arbitrary Lagrangian Eulerian hydrodynamic approach for tetrahedral meshes

NR Morgan, JI Waltz, DE Burton, MR Charest… - Journal of …, 2015 - Elsevier
We present a three dimensional (3D) arbitrary Lagrangian Eulerian (ALE) hydrodynamic
scheme suitable for modeling complex compressible flows on tetrahedral meshes. The new …