A hybrid-dG method for singularly perturbed convection-diffusion equations on pipe networks

H Egger, N Philippi - ESAIM: Mathematical Modelling and …, 2023 - esaim-m2an.org
We study the numerical approximation of singularly perturbed convection-diffusion problems
on one-dimensional pipe networks. In the vanishing diffusion limit, the number and type of …

Analysis and approximations of Dirichlet boundary control of Stokes flows in the energy space

W Gong, M Mateos, J Singler, Y Zhang - SIAM Journal on Numerical Analysis, 2022 - SIAM
We study Dirichlet boundary control of Stokes flows in 2D polygonal domains. We consider
cost functionals with two different boundary control regularization terms: the L ^2(Γ)-norm …

An HDG Method for the time-dependent drift–diffusion model of semiconductor devices

G Chen, P Monk, Y Zhang - Journal of Scientific Computing, 2019 - Springer
We propose a hybridizable discontinuous Galerkin (HDG) finite element method to
approximate the solution of the time dependent drift–diffusion problem. This system involves …

Analysis of a hybridizable discontinuous Galerkin scheme for the tangential control of the Stokes system

W Gong, W Hu, M Mateos, JR Singler… - … and Numerical Analysis, 2020 - esaim-m2an.org
We consider an unconstrained tangential Dirichlet boundary control problem for the Stokes
equations with an L 2 penalty on the boundary control. The contribution of this paper is …

An MLMCE-HDG method for the convection diffusion equation with random diffusivity

M Li, X Luo - Computers & Mathematics with Applications, 2022 - Elsevier
In this paper, a multilevel Monte Carlo ensemble hybridizable discontinuous Galerkin
(MLMCE-HDG) method is proposed to solve the convection diffusion equation with random …

Norm Error Estimates for HDG Methods Applied to the Poisson Equation with an Application to the Dirichlet Boundary Control Problem

G Chen, PB Monk, Y Zhang - SIAM Journal on Numerical Analysis, 2021 - SIAM
We prove quasi-optimal L^∞ norm error estimates (up to logarithmic factors) for the solution
of Poisson's problem in two dimensional space by the standard hybridizable discontinuous …

A new global divergence free and pressure-robust HDG method for tangential boundary control of Stokes equations

G Chen, W Gong, M Mateos, JR Singler… - Computer Methods in …, 2023 - Elsevier
Abstract In Gong et al.(2020), we proposed an HDG method to approximate the solution of a
tangential boundary control problem for the Stokes equations and obtained an optimal …

A multilevel Monte Carlo ensemble and hybridizable discontinuous Galerkin method for a stochastic parabolic problem

M Li, X Luo - Numerical Methods for Partial Differential …, 2023 - Wiley Online Library
abstract A second‐order, multilevel Monte Carlo ensemble, and hybridizable discontinuous
Galerkin (MLMCE‐HDG) method is proposed to solve the stochastic parabolic partial …

Locking-Free HDG Methods for Reissner–Mindlin Plates Equations on Polygonal Meshes

G Chen, L Zhang, S Zhang - Journal of Scientific Computing, 2025 - Springer
We present and analyze a new hybridizable discontinuous Galerkin method for the Reissner–
Mindlin plate bending problem. Our method is based on the formulation utilizing Helmholtz …

A new reduced order model of linear parabolic PDEs

N Walkington, F Weber, Y Zhang - arXiv preprint arXiv:2209.11349, 2022 - arxiv.org
How to build an accurate reduced order model (ROM) for multidimensional time dependent
partial differential equations (PDEs) is quite open. In this paper, we propose a new ROM for …