Application of the Mike21C model to simulate flow in the lower Mekong river basin.

Truong An Dang,Tuan Hoang Tran

doi:10.1186/s40064-016-3637-8

Truong An Dang, Tuan Hoang Tran

Open Access

https://doi.org/10.1186/s40064-016-3637-8

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Journal: SpringerPlus	Publication Date: Nov 15, 2016
Citations: 3	License type: CC BY 4.0

Affiliation: Institute of Marine Geology and Geophysics

Abstract

Numerical models are useful tools that play an important role in many research projects. Mike21C is one of the most well-established models for simulating a variety of processes, including bank erosion, bed level variations, aggradation, and degradation. Such processes are caused by a variety of activities, such as construction and dredging, as well as seasonal flow fluctuations. Mike21C based on an orthogonal curvilinear grid, which enables a computational speed that is faster than that of other grids. The hydrodynamic part of the model is based on solving the Saint-Venant equations. In this research, the Mike21C model was applied to simulate water depth, flow discharge distribution, and suspended transport rate along reaches of the Bassac River the on Vietnam. The data files of the curvilinear grid and bathymetry were used to generate the model. A time series for the discharge and water level of hydrological stations was established. The model was calibrated using the water level and suspended load data collected during high and low flow discharges. The simulation results show that the model can be applied well to other areas.

Highlights

The river watershed which is one of the two large branches of the Mekong River basin, flows towards the Cuu Long River Delta
Mike21C model description In this paper, the Mike21C model is used to simulate the water depth, flow discharge, suspended load and bed load concentration of the study river reaches in the flood and dry season
By analyzing the mean water level for many years at the study area we found that if we select respectively the water level values of 40 cm and 160 cm and flow discharge is 3000 m3/s and 6500 m3/s in the dry season and flood season

Summary

Introduction

The river watershed which is one of the two large branches of the Mekong River basin, flows towards the Cuu Long River Delta. Mike21C model description In this paper, the Mike21C model is used to simulate the water depth, flow discharge, suspended load and bed load concentration of the study river reaches in the flood and dry season. Mike21C model is applied to simulate the water level fluctuation, flow discharge distribution, suspended load transport rate, and bed level variation in the river downstream.

Results

Conclusion