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http://dx.doi.org/10.3741/JKWRA.2011.44.2.109

Development of Two-dimensional Finite Volume Model Applicable to Mixed Meshes  

Kim, Byung-Hyun (Dept. of Civil & Environmental Engineering, University of California)
Han, Kun-Yeon (Dept. of Archi & Civil Engineering, Kyungpook National University)
Son, Ah-Long (Dept. of Archi & Civil Engineering, Kyungpook National University)
Publication Information
Journal of Korea Water Resources Association / v.44, no.2, 2011 , pp. 109-123 More about this Journal
Abstract
In this study, 2D finite volume model, which can apply to the mixed meshes that is effective to treat the complicated topography such as a natural river, is developed. To do so, an algorithm for finding the neighbouring cell of a computational cell is introduced, and fluxes are computed using the HLLC approximate Riemann solver at each interface between a computational cell and it's neighbouring cells. Moreover, in order to numerically treat the bed slope which has important effect on the balance between flux gradients and sourte terms, different formula to compute the bed slope for rectangular and triangular mesh are applied. The developed model is applied to analyze dam-break in an experimental channel with $90^{\circ}$ bend and Malpasset dam-break in France. The two cases consist of mixed meshes and the suggested method is validated for the experimental channel and natural channel by comparison with the experimental data, field data and computed results.
Keywords
mixed mesh; complex geometry; HLLC Riemann solver; bed slope; finite volume model;
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Times Cited By KSCI : 5  (Citation Analysis)
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