Deep reinforcement learning for turbulence modeling in large eddy simulations

M Kurz, P Offenhäuser, A Beck - International journal of heat and fluid flow, 2023 - Elsevier
Over the last years, supervised learning (SL) has established itself as the state-of-the-art for
data-driven turbulence modeling. In the SL paradigm, models are trained based on a …

[HTML][HTML] A novel robust strategy for discontinuous Galerkin methods in computational fluid mechanics: Why? When? What? Where?

GJ Gassner, AR Winters - Frontiers in Physics, 2021 - frontiersin.org
In this paper we will review a recent emerging paradigm shift in the construction and
analysis of high order Discontinuous Galerkin methods applied to approximate solutions of …

A posteriori subcell limiting of the discontinuous Galerkin finite element method for hyperbolic conservation laws

M Dumbser, O Zanotti, R Loubère, S Diot - Journal of Computational …, 2014 - Elsevier
The purpose of this work is to propose a novel a posteriori finite volume subcell limiter
technique for the Discontinuous Galerkin finite element method for nonlinear systems of …

A skew-symmetric discontinuous Galerkin spectral element discretization and its relation to SBP-SAT finite difference methods

GJ Gassner - SIAM Journal on Scientific Computing, 2013 - SIAM
This paper shows that the discontinuous Galerkin collocation spectral element method with
Gauss--Lobatto points (DGSEM-GL) satisfies the discrete summation-by-parts (SBP) …

FLEXI: A high order discontinuous Galerkin framework for hyperbolic–parabolic conservation laws

N Krais, A Beck, T Bolemann, H Frank, D Flad… - … & Mathematics with …, 2021 - Elsevier
High order (HO) schemes are attractive candidates for the numerical solution of multiscale
problems occurring in fluid dynamics and related disciplines. Among the HO discretization …

[HTML][HTML] : A high-order discontinuous Galerkin solver for flow simulations and multi-physics applications

E Ferrer, G Rubio, G Ntoukas, W Laskowski… - Computer Physics …, 2023 - Elsevier
We present the latest developments of our High-Order Spectral Element Solver (Image 1),
an open source high-order discontinuous Galerkin framework, capable of solving a variety of …

High‐order discontinuous Galerkin spectral element methods for transitional and turbulent flow simulations

AD Beck, T Bolemann, D Flad, H Frank… - … Methods in Fluids, 2014 - Wiley Online Library
In this paper, we investigate the accuracy and efficiency of discontinuous Galerkin spectral
method simulations of under‐resolved transitional and turbulent flows at moderate Reynolds …

A provably entropy stable subcell shock capturing approach for high order split form DG for the compressible Euler equations

S Hennemann, AM Rueda-Ramírez… - Journal of …, 2021 - Elsevier
The main result in this paper is a provably entropy stable shock capturing approach for the
high order entropy stable Discontinuous Galerkin Spectral Element Method (DGSEM) based …

On the accuracy of high-order discretizations for underresolved turbulence simulations

GJ Gassner, AD Beck - Theoretical and Computational Fluid Dynamics, 2013 - Springer
In this paper, we investigate the accuracy of a high-order discontinuous Galerkin
discretization for the coarse resolution simulation of turbulent flow. We show that a low-order …

Explicit discontinuous Galerkin methods for unsteady problems

F Hindenlang, GJ Gassner, C Altmann, A Beck… - Computers & …, 2012 - Elsevier
In this work we consider a special implementation of a discontinuous Galerkin (DG) method
for general unstructured hexahedral element meshes called the discontinuous Galerkin …