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- Title
ES-PIM with Cell Death and Birth Technique for Simulating Heat Transfer in Concrete Dam Construction Process.
- Authors
Cheng, Jing; Liu, G. R.; Li, Tong-Chun; Wu, Sheng-Chuan; Zhang, Gui-Yong
- Abstract
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.
- Subjects
MESHFREE methods; INTERPOLATION; HEAT transfer; MATHEMATICAL models of thermodynamics; CONCRETE dam design &; construction; ACCELERATION of convergence in numerical analysis; CELL death; FINITE element method
- Publication
Journal of Engineering Mechanics, 2012, Vol 138, Issue 1, p133
- ISSN
0733-9399
- Publication type
Article
- DOI
10.1061/(ASCE)EM.1943-7889.0000312