OEDG: Oscillation-eliminating discontinuous Galerkin method for hyperbolic conservation laws

M Peng, Z Sun, K Wu - Mathematics of Computation, 2024 - ams.org
Suppressing spurious oscillations is crucial for designing reliable high-order numerical
schemes for hyperbolic conservation laws, yet it has been a challenge actively investigated …

Sparse-grid discontinuous Galerkin methods for the Vlasov–Poisson–Lenard–Bernstein model

S Schnake, C Kendrick, E Endeve, M Stoyanov… - Journal of …, 2024 - Elsevier
Sparse-grid methods have recently gained interest in reducing the computational cost of
solving high-dimensional kinetic equations. In this paper, we construct adaptive and hybrid …

Adaptive sparse grid discontinuous Galerkin method: review and software implementation

J Huang, W Guo, Y Cheng - Communications on Applied Mathematics and …, 2024 - Springer
This paper reviews the adaptive sparse grid discontinuous Galerkin (aSG-DG) method for
computing high dimensional partial differential equations (PDEs) and its software …

Robust DG Schemes on Unstructured Triangular Meshes: Oscillation Elimination and Bound Preservation via Optimal Convex Decomposition

S Ding, S Cui, K Wu - arXiv preprint arXiv:2409.09620, 2024 - arxiv.org
Discontinuous Galerkin (DG) schemes on unstructured meshes offer the advantages of
compactness and the ability to handle complex computational domains. However, their …

An adaptive high-order piecewise polynomial based sparse grid collocation method with applications

Z Tao, Y Jiang, Y Cheng - Journal of Computational Physics, 2021 - Elsevier
This paper constructs adaptive sparse grid collocation method onto arbitrary order
piecewise polynomial space. The sparse grid method is a popular technique for high …

Bound-preserving OEDG schemes for Aw–Rascle–Zhang traffic models on networks

W Chen, S Cui, K Wu, T Xiong - Journal of Computational Physics, 2025 - Elsevier
Physical solutions to the widely used Aw–Rascle–Zhang (ARZ) traffic model and the
adapted pressure ARZ model should satisfy the positivity of density, the minimum and …

Wavelet multiresolution interpolation Galerkin method for nonlinear boundary value problems with localized steep gradients

X Liu, Y Zhou, J Wang - Applied Mathematics and Mechanics, 2022 - Springer
The wavelet multiresolution interpolation for continuous functions defined on a finite interval
is developed in this study by using a simple alternative of transformation matrix. The wavelet …

A class of adaptive multiresolution ultra-weak discontinuous Galerkin methods for some nonlinear dispersive wave equations

J Huang, Y Liu, Y Liu, Z Tao, Y Cheng - SIAM Journal on Scientific Computing, 2022 - SIAM
In this paper, we propose a class of adaptive multiresolution (also called the adaptive sparse
grid) ultra-weak discontinuous Galerkin (UWDG) methods for solving some nonlinear …

An adaptive sparse grid local discontinuous Galerkin method for Hamilton-Jacobi equations in high dimensions

W Guo, J Huang, Z Tao, Y Cheng - Journal of Computational Physics, 2021 - Elsevier
Abstract The Hamilton-Jacobi (HJ) equations arise in optimal control and many other
applications. Oftentimes, such equations are posed in high dimensions, and this presents …

Robust Discontinuous Galerkin Methods Maintaining Physical Constraints for General Relativistic Hydrodynamics

H Cao, M Peng, K Wu - arXiv preprint arXiv:2410.05000, 2024 - arxiv.org
Simulating general relativistic hydrodynamics (GRHD) presents challenges such as
handling curved spacetime, achieving high-order shock-capturing accuracy, and preserving …