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http://dx.doi.org/10.6112/kscfe.2017.22.1.095

NUMERICAL SIMULATION OF DEBRIS FLOW USING MULTIPHASE AND NON-NEWTONIAN FLUID MODEL  

Lee, S. (School of Civil Engineering, Chungbuk National University)
Hwnag, K.K. (Department of Civil System Engineering, Chungbuk National University)
Publication Information
Journal of computational fluids engineering / v.22, no.1, 2017 , pp. 95-102 More about this Journal
Abstract
Debris flow is a composition of solid objects of various sizes, suspension and water, which occurs frequently as the results of landslide following heavy rainfall. This often causes extensive damage in the form of socio-economic losses and casualties as witnessed during the incident around Mt. Umyeon, Seoul in 2011. There have been numerous investigation to mitigate the impacts from debris flow; however, the estimation as preparedness measure has not been successful due to nonlinear and multiphase characteristics of phenomena both in material and process inherent in the debris flow. This study presents a numerical approach to simulate the debris flow using open source code of computational fluid dynamics, OpenFOAM with non-Newtonian viscosity model for three phase material modeling. In order to validate the proposed numerical method, the quantitative evaluations were made by comparisons with experimental results and qualitative analysis for the dispersion characteristics was carried for the case of debris flow in the actual incident from Mt. Umyeon.
Keywords
Debris flow; Non-Newtonian fluid; Multiphase method; OpenFOAM;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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