3-D numerical simulation of flow in natural meandering channel
3-D numerical simulation of flow in natural meandering channel
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发表时间：
2013
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通讯作者：
Lv Sui-j
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作者：
Lv Sui-j
为研究天然河道水流运动、河床演变及泥沙冲淤规律，采用有限体积法建立贴体坐标系下的三维数值模型，采用SIMPLEC算法计算三维流速场。将模型的模拟结果与实测数据进行了比较。结果表明，计算结果与实测资料吻合较好，反映了天然潮滩河道的三维水流特性。表层水颗粒将向凹岸运动，而底层水颗粒将向凸岸运动。结果表明，该模型可用于模拟沿着天然河道的水流运动。
In order to study the flow movement,bed evolution and sediment erosion and deposition of the natural rivers,a 3-D numerical model is established in body-fitling coordinates by a finite volume method,and SIMPLEC algorithm is used to calculate the 3-D velocity fields. The simulated results of the model are compared with the measured data. The findings indicate that the calculated results agree well with the measured data and reflect the 3-D flow characteristics in the natural meadering channels. The surface water particles will move towards the concave bank,while the bottom water particles will be towards the convex bank. It is shown that the model can be used to simulate the flow movement along the natural meadering channels.