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http://dx.doi.org/10.3795/KSME-B.2004.28.4.395

Finite Element Analysis of Collapse of a Water Dam Using Filling Pattern Technique and Adaptive Grid Refinement of Triangular Elements  

Kim, Ki-Don (KAIST 대학원 기계공학과)
Yang, Dong-Yol (KAIST 기계공학과)
Jeong, Jun-Ho (KIMM 지능형정밀기계연구부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.28, no.4, 2004 , pp. 395-405 More about this Journal
Abstract
The filling pattern and an adaptive grid refinement based on the finite element method and Eulerian mesh advancement approach have been developed to analyze incompressible transient viscous flow with free surfaces. The governing equation for flow analysis is Navier-Stokes equation including inertia and gravity effects. The mixed FE formulation and predictor-corrector method are used effectively for unsteady numerical simulation. The flow front surface and the volume inflow rate are calculated using the filling pattern technique to select an adequate pattern among four filling patterns at each triangular control volume. By adaptive grid refinement, the new flow field that renders better prediction in flow surface shape is generated and the velocity field at the flow front part is calculated more exactly. In this domain the elements in the surface region are made finer than those in the remaining regions for more efficient computation. Using the proposed numerical technique, the collapse of a water dam has been analyzed to predict flow phenomenon of fluid and the predicted front positions with respect to time have been compared with the reported experimental results.
Keywords
Free Surface; Transient Viscous Flow; Finite Element Method; Triangular Control Volume;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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