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This work proposes a superconvergent hybridizable discontinuous Galerkin (HDG) method for the approximation of the Cauchy formulation of the Stokes equation using same degree of polynomials for the primal and mixed variables. The novel…

数值分析 · 数学 2019-08-16 Matteo Giacomini , Alexandros Karkoulias , Ruben Sevilla , Antonio Huerta

The first super-convergent hybridisable discontinuous Galerkin (HDG) method for linear elastic problems capable of using the same degree of approximation for both the primal and mixed variables is presented. The key feature of the method is…

数值分析 · 数学 2019-08-16 Ruben Sevilla , Matteo Giacomini , Alexandros Karkoulias , Antonio Huerta

We present a hybridized discontinuous Galerkin (HDG) method for stationary linearized incompressible magnetohydrodynamics (MHD) equations. At the heart of the paper is the introduction of an HDG flux of the dual saddle-point form of the MHD…

数值分析 · 数学 2019-01-15 Jeonghun J. Lee , Stephen Shannon , Tan Bui-Thanh , John N. Shadid

We propose a new discretization method for the Stokes equations. The method is an improved version of the method recently presented in [C. Lehrenfeld, J. Sch\"oberl, Comp. Meth. Appl. Mech. Eng., 361 (2016)] which is based on an…

数值分析 · 数学 2018-03-29 Philip L. Lederer , Christoph Lehrenfeld , Joachim Schöberl

A scheme for the solution of fluid-structure interaction (FSI) problems with weakly compressible flows is proposed in this work. A novel hybridizable discontinuous Galerkin (HDG) method is derived for the discretization of the fluid…

流体动力学 · 物理学 2020-09-14 Andrea La Spina , Martin Kronbichler , Matteo Giacomini , Wolfgang A. Wall , Antonio Huerta

In this paper, we propose a unified numerical framework for the time-dependent incompressible Navier--Stokes equation which yields the $H^1$-, $H(\text{div})$-conforming, and discontinuous Galerkin methods with the use of different viscous…

数值分析 · 数学 2020-11-16 Xi Chen , Yuwen Li , Corina Drapaca , John Cimbala

We present a superconvergent hybridizable discontinuous Galerkin (HDG) method for the steady-state incompressible Navier-Stokes equations on general polyhedral meshes. For arbitrary conforming polyhedral mesh, we use polynomials of degree…

数值分析 · 数学 2015-11-30 Weifeng Qiu , Ke Shi

We propose a high-order hybridizable discontinuous Galerkin (HDG) formulation for the fully dynamic, linear thermo-poroelasticity problem. The governing equations are formulated as a first-order hyperbolic system incorporating solid and…

数值分析 · 数学 2025-06-24 Salim Meddahi

This paper analyzes a class of globally divergence-free (and therefore pressure-robust) hybridizable discontinuous Galerkin (HDG) finite element methods for stationary Navier-Stokes equations. The methods use the…

数值分析 · 数学 2022-04-08 Gang Chen , Xiaoping Xie

We present an efficient discontinuous Galerkin scheme for simulation of the incompressible Navier-Stokes equations including laminar and turbulent flow. We consider a semi-explicit high-order velocity-correction method for time integration…

数值分析 · 数学 2017-08-15 Benjamin Krank , Niklas Fehn , Wolfgang A. Wall , Martin Kronbichler

We present a high-order hybridized discontinuous Galerkin (HDG) method for the fully coupled time-dependent Stokes-Darcy-transport problem where the fluid viscosity and source/sink terms depend on the concentration and the…

数值分析 · 数学 2023-07-07 Aycil Cesmelioglu , Dinh Dong Pham , Sander Rhebergen

In the spirit of making high-order discontinuous Galerkin (DG) methods more competitive, researchers have developed the hybridized DG methods, a class of discontinuous Galerkin methods that generalizes the Hybridizable DG (HDG), the…

计算物理 · 物理学 2018-08-16 Pablo Fernandez , Ngoc-Cuong Nguyen , Jaime Peraire

This paper develops an hybridizable discontinuous Galerkin (HDG) finite element method of arbitrary order for the steady thermally coupled incompressible Magnetohydrodynamics (MHD) flow. The HDG scheme uses piecewise polynomials of degrees…

数值分析 · 数学 2025-01-03 Min Zhang , Zimo Zhu , Qijia Zhai , Xiaoping Xie

We propose a hydridizable discontinuous Galerkin (HDG) method for solving the Cahn-Hilliard equation. The temporal discretization can be based on either the backward Euler method or the convex-splitting method. We show that the fully…

数值分析 · 数学 2024-12-20 Gang Chen , Daozhi Han , John Singler , Yangwen Zhang

Purpose: This study aims to assess the accuracy of degree adaptive strategies in the context of incompressible Navier-Stokes flows using the high order hybridisable discontinuous Galerkin (HDG) method. Design/methodology/approach: The work…

流体动力学 · 物理学 2024-11-12 Agustina Felipe , Ruben Sevilla , Oubay Hassan

We propose a new family of high order staggered semi-implicit discontinuous Galerkin (DG) methods for the simulation of natural convection problems. Assuming small temperature fluctuations, the Boussinesq approximation is valid and the flow…

计算物理 · 物理学 2019-12-05 Saray Busto , Maurizio Tavelli , Walter Boscheri , Michael Dumbser

This work presents a review of high-order hybridisable discontinuous Galerkin (HDG) methods in the context of compressible flows. Moreover, an original unified framework for the derivation of Riemann solvers in hybridised formulations is…

数值分析 · 数学 2021-06-28 Jordi Vila-Pérez , Matteo Giacomini , Ruben Sevilla , Antonio Huerta

We present a new method for simulating incompressible immiscible two-phase flow in porous media. The semi-implicit method decouples the wetting phase pressure and saturation equations. The equations are discretized using a hybridizable…

计算工程、金融与科学 · 计算机科学 2018-02-19 Maurice S. Fabien , Matthew G. Knepley , Beatrice M. Riviere

In this paper we present an efficient discretization method for the solution of the unsteady incompressible Navier-Stokes equations based on a high order (Hybrid) Discontinuous Galerkin formulation. The crucial component for the efficiency…

数值分析 · 数学 2016-06-29 Christoph Lehrenfeld , Joachim Schöberl

A new high order accurate staggered semi-implicit space-time discontinuous Galerkin (DG) method is presented for the simulation of viscous incompressible flows on unstructured triangular grids in two space dimensions. The staggered DG…

数值分析 · 数学 2020-10-09 Francesco Lohengrin Romeo , Michael Dumbser , Maurizio Tavelli
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