Can adaptive grid refinement produce grid-independent solutions for incompressible flows?

JOURNAL OF COMPUTATIONAL PHYSICS

卷:344

Article

Wackers, Jeroen¹  Deng, Ganbo¹  Guilmineau, Emmanuel¹  Leroyer, Alban¹  Queutey, Patrick¹  Visonneau, Michel¹  Palmieri, Alexandro²  Liverani, Alfredo² 

[1] Ecole Cent Nantes, CNRS UMR 6598, LHEEA Lab, F-44321 Nantes, France

[2] CIRI MAM Tecnopolo Naut UNIBO, Via St Alberto 163, Ravenna, Italy

关键词: Grid adaptation;    Grid convergence;    Uncertainty estimation;    Hydrodynamic flows;   

DOI  :  10.1016/j.jcp.2017.04.077

来源: Elsevier

【 摘 要 】

This paper studies if adaptive grid refinement combined with finite-volume simulation of the incompressible RANS equations can be used to obtain grid-independent solutions of realistic flow problems. It is shown that grid adaptation based on metric tensors can generate series of meshes for grid convergence studies in a straightforward way. For a two-dimensional airfoil and the flow around a tanker ship, the grid convergence of the observed forces is sufficiently smooth for numerical uncertainty estimation. Grid refinement captures the details of the local flow in the wake, which is shown to be grid converged on reasonably-sized meshes. Thus, grid convergence studies using automatic refinement are suitable for high-Reynolds incompressible flows. (C) 2017 Elsevier Inc. All rights reserved.

【 授权许可】

Free