Premium
Sequential feature‐based mesh movement and adjoint error‐based mesh refinement
Author(s) -
Vivarelli Guglielmo,
Qin Ning,
Shahpar Shahrokh,
Radford David
Publication year - 2021
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.4882
Subject(s) - aerodynamics , turbomachinery , computer science , feature (linguistics) , flow (mathematics) , polygon mesh , process (computing) , variable (mathematics) , computational fluid dynamics , mathematical optimization , algorithm , gas compressor , topology (electrical circuits) , mathematics , mechanical engineering , aerospace engineering , geometry , engineering , mathematical analysis , computer graphics (images) , operating system , combinatorics , philosophy , linguistics
Summary Nowadays, aerodynamic computational modeling is carried out on a daily basis in an industrial setting. This is done with the aim of predicting the performance and flow characteristics of new components. However, limited resources in terms of time and hardware force the engineer to employ relatively coarse computational grids, thus achieving results with variable degree of inaccuracy. In this article, a novel combination of feature and adjoint‐based mesh adaptation methods is investigated and applied to typical three‐dimensional turbomachinery cases, such as compressor and fan blades. The proposed process starts by employing feature‐based mesh movement to improve the global flow solution and then adjoint refinement to tune the mesh for each quantity of interest. Comparison of this process with one utilizing only the adjoint refinement procedure shows significant benefits in terms of accuracy of the performance quantity.