| Titre : | ES - PIM with cell death and birth technique for simulating heat transfer in concrete dam construction process (2012) |
| Auteurs : | Jing Cheng, Auteur ; G. R. Liu, Auteur ; Tong-Chun Li, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Journal of engineering mechanics (Vol. 138 N° 1, Janvier 2012) |
| Article en page(s) : | pp.133-142 |
| Note générale : | Mécanique appliquée |
| Langues : | Anglais |
| Tags : | Numerical methods Smoothed meshfree 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 |
