ES-PIM with Cell Death and Birth Technique for Simulating Heat Transfer in Concrete Dam Construction Process

by Jing Cheng, (corresponding author), Ph.D., Lecturer; College of Water Conservancy and Hydropower Engineering, Hohai Univ., Nanjing 210098, China.,,
G. R. Liu, Professor; Centre for Advanced Computations in Engineering Science (ACES), Dept. of Mechanical Engineering, National Univ. of Singapore, 117576 Singapore.,
Tong-Chun Li, Professor; College of Water Conservancy and Hydropower Engineering, Hohai Univ., Nanjing 210098, China.,
Sheng-Chuan Wu, Ph.D., Lecturer; School of Materials Science and Engineering, Hefei Univ. of Technology, Hefei 230009, China.,
Gui-Yong Zhang, Research Assistant Professor; School of Mechanical and Chemical Engineering, Univ. of Western Australia, Crawley WA 6009, Australia.,

Serial Information: Issue 1, Pg. 133-142

Document Type: Journal Paper

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.

Subject Headings: Concrete dams | Construction methods | Heat transfer | Infrastructure construction | Concrete construction | Finite element method | Mesh generation | Transient response |

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