Cite this paper:
ZHAO Dongmiao, TANG Jun, WU Xiuguang, LIN Changning, LIU Lijun, CHEN Jian. Developing a 2D vertical flow and sediment transport model for open channels using the Youngs-VOF method[J]. Journal of Oceanology and Limnology, 2017, 35(2): 444-451

Developing a 2D vertical flow and sediment transport model for open channels using the Youngs-VOF method

ZHAO Dongmiao1,2, TANG Jun1, WU Xiuguang3, LIN Changning2, LIU Lijun2, CHEN Jian2
1 State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;
2 Wenzhou Survey & Design Institute of Water Conservancy & Hydroelectricity, Wenzhou 325009, China;
3 Zhejiang Institute of Hydraulic & Estuary, Hangzhou 310020, China
Abstract:
A 2D vertical (2DV) numerical model, without σ-coordinate transformation in the vertical direction, is developed for the simulation of flow and sediment transport in open channels. In the model, time-averaged Reynolds equations are closed by the k-ε nonlinear turbulence model. The modified YoungsVOF method is introduced to capture free surface dynamics, and the free surface slope is simulated using the ELVIRA method. Based on the power-law scheme, the k-ε model and the suspended-load transport model are solved numerically with an implicit scheme applied in the vertical plane and an explicit scheme applied in the horizontal plane. Bedload transport is modeled using the Euler-WENO scheme, and the grid-closing skill is adopted to deal with the moving channel bed boundary. Verification of the model using laboratory data shows that the model is able to adequately simulate flow and sediment transport in open channels, and is a good starting point for the study of sediment transport dynamics in strong nonlinear flow scenarios.
Key words:    sediment transport|2D vertical model|Youngs-VOF|Euler-WENO|bed evolution   
Received: 2015-02-11   Revised: 2015-04-01
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Articles by ZHAO Dongmiao
Articles by TANG Jun
Articles by WU Xiuguang
Articles by LIN Changning
Articles by LIU Lijun
Articles by CHEN Jian
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