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ES - PIM with cell death and birth technique for simulating heat transfer in concrete dam construction process / Jing Cheng in Journal of engineering mechanics, Vol. 138 N° 1 (Janvier 2012) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 138 N° 1 (Janvier 2012) . - pp.133-142 Titre : ES - PIM with cell death and birth technique for simulating heat transfer in concrete dam construction process Type de document : texte imprimé Auteurs : Jing Cheng, Auteur ; G. R. Liu, Auteur ; Tong-Chun Li, Auteur Année de publication : 2012 Article en page(s) : pp.133-142 Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Numerical  methods  Smoothed  meshfree  methods  Transient  heat  transfer  Cell  death  and  birth  Concrete  dam Résumé : The meshfree edge-based smoothed point interpolation method (ES-PIM) is extended to the simulation of transient heat transfer problems for concrete dams in the construction process. The present ES-PIM consists of the following ingredients: (1) a novel cell death and birth technique is proposed to deal with the existence or nonexistence of the concrete layers, and hence the construction process of dams can be easily simulated; (2) a lumped diagonalization procedure for specific heat matrix is implemented to improve the stability and efficiency of transient computations; and (3) the triangular background cells are used to construct the nonoverlapping smoothing integral subdomains, and the cell-based T3- and T6/3-schemes are adopted for the node selection in the formation of PIM shape functions. On the basis of the weakened weak formulation, the ES-PIM is spatially stable and convergent to the exact solution. The ES-PIM can achieve better results in accuracy and convergence rate, in comparison with the finite element method using the same meshes. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000312 [article] ES - PIM with cell death and birth technique for simulating heat transfer in concrete dam construction process [texte imprimé] / Jing Cheng, Auteur ; G. R. Liu, Auteur ; Tong-Chun Li, Auteur . - 2012 . - pp.133-142. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 138 N° 1 (Janvier 2012) . - pp.133-142 Mots-clés : Numerical  methods  Smoothed  meshfree  methods  Transient  heat  transfer  Cell  death  and  birth  Concrete  dam Résumé : The meshfree edge-based smoothed point interpolation method (ES-PIM) is extended to the simulation of transient heat transfer problems for concrete dams in the construction process. The present ES-PIM consists of the following ingredients: (1) a novel cell death and birth technique is proposed to deal with the existence or nonexistence of the concrete layers, and hence the construction process of dams can be easily simulated; (2) a lumped diagonalization procedure for specific heat matrix is implemented to improve the stability and efficiency of transient computations; and (3) the triangular background cells are used to construct the nonoverlapping smoothing integral subdomains, and the cell-based T3- and T6/3-schemes are adopted for the node selection in the formation of PIM shape functions. On the basis of the weakened weak formulation, the ES-PIM is spatially stable and convergent to the exact solution. The ES-PIM can achieve better results in accuracy and convergence rate, in comparison with the finite element method using the same meshes. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000312