Article (Scientific journals)
Finite element model reduction for space thermal analysis
Jacques, Lionel; Béchet, Eric; Kerschen, Gaëtan
2017In Finite Elements in Analysis and Design, 127, p. 6-15
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Keywords :
Thermal Analysis; Space; Finite Element Method; Reduction; Radiation
Abstract :
[en] To alleviate the computational burden of the nite element method for thermal analyses involving conduction and radiation, this paper proposes an automatic conductive-radiative reduction process based on the clustering of a detailed mesh coming from a structural model for instance. The proposed method leads to a signi cant reduction of the number of radiative exchange factors (REFs) to compute and size of the corresponding matrix. It further keeps accurate conduction information by introducing the concept of physically meaningful super nodes. The REFs between the super nodes are computed through Monte Carlo ray-tracing on the partitioned mesh, preserving the versatility of the method. The resulting conductive-radiative reduced model is solved using standard iterative techniques and the detailed mesh temperatures can be recovered from the super nodes temperatures for further thermo-mechanical analysis. The proposed method is applied to a structural component of the Meteosat Third Generation mission and is benchmarked against ESATAN-TMS, the standard thermal analysis software used in the European aerospace industry.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Jacques, Lionel  ;  Université de Liège > CSL (Centre Spatial de Liège)
Béchet, Eric ;  Université de Liège > Département d'aérospatiale et mécanique > Conception géométrique assistée par ordinateur
Kerschen, Gaëtan  ;  Université de Liège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Language :
English
Title :
Finite element model reduction for space thermal analysis
Publication date :
May 2017
Journal title :
Finite Elements in Analysis and Design
ISSN :
0168-874X
eISSN :
1872-6925
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
127
Pages :
6-15
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 09 January 2017

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