Work

Criteria for Effective High-Order Meshes in Discontinuous Galerkin CFD

Year: 2025

Type: conference-paper

Abstract: This paper aims to establish effective criteria for evaluating high-order meshes used in Discontinuous Galerkin methods focusing on their performance, accuracy, and computational efficiency. High-order steady-state simulations of the RAE 2822 airfoil are performed using the next-generation CFD solver CODA. The numerical results demonstrate that many metrics typically applied to linear meshes are no longer applicable to high-order meshes. In particular, high-order meshes accommodate larger y+ values, and the influence of the normal growth rate decreases as both the scheme and grid orders increase. Furthermore, the analysis of streamwise spacing suggests that greater spacing can be used with higher-order schemes and meshes. The solution-adaptive mesh refinement results highlight the ability of high-order meshes to achieve accurate solutions on relatively coarse grids, indicating their potential for reducing computational costs without sacrificing accuracy.

DOI: 10.2514/6.2025-3057

Authors: Florentina-Luiza Zavalan, Christopher Wales, Dorian Jones, Ann Gaitonde

Institution: University of Bristol

Language: English

Topic: Computational Fluid Dynamics and Aerodynamics

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Aerospace Technology Institute, University of Bristol

Award: G2194895935

OpenAlex ID: W4412485145

FWCI:

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