Increasing the Flexibility of the High Order Discontinuous Galerkin Framework FLEXI Towards Large Scale Industrial Applications

Beck, Andrea; Gao, Min; Kempf, Daniel; Kopper, Patrick; Krais, Nico; Kurz, Marius; Zeifang, Jonas; Munz, Claus‐Dieter

doi:10.1007/978-3-030-80602-6_22

Cited by 2 publications

(1 citation statement)

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“…Those include tools to perform temporal or spatial averaging, analysis based on Fourier transformation, direct mode decomposition and several other, smaller programs. As a side project, we created a pipeline [42] which allows to render results from FLEXI in the open-source 3D computer graphics toolset Blender [43]. It can be used to present 3D simulation results in a pleasing visual style, and some examples can be found in this article.…”

Section: Posti: Post-processing Suitementioning

confidence: 99%

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

Krais¹,

Beck²,

Bolemann³

et al. 2019

Preprint

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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 variants, discontinuous Galerkin schemes offer a collection of advantageous features which have lead to a strong increase in interest in them and related formulations in the last decade. The methods have matured sufficiently to be of practical use for a range of problems, for example in direct numerical and large eddy simulation of turbulence. However, in order to take full advantage of the potential benefits of these methods, all steps in the simulation chain must be designed and executed with HO in mind. Especially in this area, many commercially available closed-source solutions fall short. In this work, we therefor present the FLEXI framework, a HO consistent, open-source simulation tool chain for solving the compressible Navier-Stokes equations in a high performance computing setting. We describe the numerical algorithms and implementation details and give an overview of the features and capabilities of all parts of the framework. Beyond these technical details, we also discuss the important, but often overlooked issues of code stability, reproducibility and user-friendliness. The benefits gained by developing an open-source framework are discussed, with a particular focus on usability for the open-source community. We close with sample applications that demonstrate the wide range of use cases and the expandability of FLEXI and an overview of current and future developments.

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Section: Posti: Post-processing Suitementioning

confidence: 99%