Table of Content

Open Access iconOpen Access

ARTICLE

Dam-break model with Characteristic-Based Operator-Splitting Finite Element Method

Da-guo Wang1,2, Leslie-George Tham2, Qing-xiang Shui1

School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
Department of Civil and Structural Engineering,The University of Hong Kong, Hong Kong 999077, China

Computer Modeling in Engineering & Sciences 2013, 91(5), 355-376. https://doi.org/10.3970/cmes.2013.091.355

Abstract

A finite element method, which is the characteristic-based operatorsplitting (CBOS) algorithm, is adopted to solve unsteady incompressible Navier- Stokes (N-S) equations. In each time step, the equations are split into the diffusive part and the convective part. The convective part is discretized using the characteristic Galerkin method and solved explicitly. The moving interface is captured by the pseudo-concentration method, thus, a new dam-break model is established. Through the validation of a dam-break onto a downstream dry bed or wet bed, it is shown that the present model can accurately simulate the moving interface flows. We also study dam-break in a confined reservoir and the dam-break wave impact on a spur dike. The complexity of the interface shape occurring in the different stages, including the gradual formation of the air bubble in the case of dam-break in a confined reservoir, and the generation of dam-break wave, the overtopping the spur dike and the impacting on the downstream seabed in the case of the dam-break wave impact on a spur dike, can be obtained.

Keywords


Cite This Article

APA Style
Wang, D., Tham, L., Shui, Q. (2013). Dam-break model with characteristic-based operator-splitting finite element method. Computer Modeling in Engineering & Sciences, 91(5), 355-376. https://doi.org/10.3970/cmes.2013.091.355
Vancouver Style
Wang D, Tham L, Shui Q. Dam-break model with characteristic-based operator-splitting finite element method. Comput Model Eng Sci. 2013;91(5):355-376 https://doi.org/10.3970/cmes.2013.091.355
IEEE Style
D. Wang, L. Tham, and Q. Shui "Dam-break model with Characteristic-Based Operator-Splitting Finite Element Method," Comput. Model. Eng. Sci., vol. 91, no. 5, pp. 355-376. 2013. https://doi.org/10.3970/cmes.2013.091.355



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 1329

    View

  • 818

    Download

  • 0

    Like

Share Link