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Hybrid mesh adaptation applied to industrial numerical combustion
Author(s) -
Sirois Y.,
McKenty F.,
Gravel L.,
Guibault F.
Publication year - 2011
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.2686
Subject(s) - polygon mesh , hessian matrix , measure (data warehouse) , intersection (aeronautics) , mathematical optimization , combustion , metric (unit) , partial differential equation , computer science , mathematics , basis function , basis (linear algebra) , combustor , mathematical analysis , geometry , engineering , data mining , aerospace engineering , chemistry , operations management , organic chemistry
SUMMARY This paper presents an anisotropic mesh adaptation method applied to industrial combustion problems. The method is based on a measure of the distance between two Riemannian metrics called metric non‐conformity. This measure, which can be used to build a cost function to adapt meshes comprising several types of mesh elements, provides the basis for a generic mesh adaptation approach applicable to various types of physical problems governed by partial differential equations. The approach is shown to be applicable to industrial combustion problems, through the specification of a target metric computed as the intersection of several Hessian matrices reconstructed from the main variables of the governing equations. Numerical results show that the approach is cost effective in that it can drastically improve the prediction of temperature and species distributions in the flame region of a combustor while reducing computational cost. The results can be used as a basis for pollutant prediction models. Copyright © 2011 John Wiley & Sons, Ltd.