An automated approach for solution based mesh adaptation to enhance numerical accuracy for a given number of grid cells

An automated approach for solution based mesh adaptation to enhance numerical accuracy for a given number of grid cells

Lucas, P.
Van Zuijlen, A.H.
Bijl, H.

Aerospace Engineering

2009-12-31

Mesh adaptation is a fairly established tool to obtain numerically accurate solutions for flow problems. Computational efficiency is, however, not always guaranteed for the adaptation strategies found in literature. Typically excessive mesh growth diminishes the potential efficiency gain. This paper, therefore, extends the strategy proposed by [Aftosmis and Berger (2002)] to compute the refinement threshold. The extended strategy computes the refinement threshold based on a user desired number of grid cells and adaptations, thereby ensuring high computational efficiency. Because our main interest is flow around wind turbines, the adaptation strategy has been optimized for flow around wind turbine airfoils. The proposed strategy was found to yield computationally efficient computations for flow around wind turbine airfoils as well as for other flow problems.

solution based mesh adaptation
computation refinement threshold
hexahedral grids
computational efficiency

http://resolver.tudelft.nl/uuid:feb3ce7b-e6f8-4d04-a6c1-1dad6ef05221

Tech Science Press

1526-1492

CMES computer modeling in engineering and sciences, 41 (2), 2009

Institutional Repository

journal article

(c) 2009 Lucas, P.; Van Zuijlen, A.H.; Bijl, H.