假冬冬, 邵学军, 王虹, 周刚. 考虑河岸变形的三维水沙数值模拟研究[J]. 水科学进展, 2009, 20(3): 311-317.
引用本文: 假冬冬, 邵学军, 王虹, 周刚. 考虑河岸变形的三维水沙数值模拟研究[J]. 水科学进展, 2009, 20(3): 311-317.
JIA Dong-dong, SHAO Xue-jun, WANG Hong, ZHOU Gang. 3D mathematical modeling for fluvial processes considering bank erosion[J]. Advances in Water Science, 2009, 20(3): 311-317.
Citation: JIA Dong-dong, SHAO Xue-jun, WANG Hong, ZHOU Gang. 3D mathematical modeling for fluvial processes considering bank erosion[J]. Advances in Water Science, 2009, 20(3): 311-317.

考虑河岸变形的三维水沙数值模拟研究

3D mathematical modeling for fluvial processes considering bank erosion

  • 摘要: 将粘性河岸崩塌模拟力学方法与水沙模型相结合,构建了考虑河岸变形的三维数值模型。基于非正交网格,采用局部网格可动技术处理由河岸崩塌引起的河道摆动过程。模型采用有限体积法对方程进行离散,采用与动量插值技术相结合的SIMPLEC算法进行模型求解。通过弯道发展过程的计算表明,模型能够有效地模拟出河道的复杂演变过程。

     

    Abstract: A 3D mathematical modeling considering bank erosion is developed by using both a cohesive bank erosion model and a 3D flow-sediment transport model.The locally-adaptive grid system based on the non-orthogonal grid is proposed to simulate the lateral migration in the channel due to the bank erosion.The governing equations for flow-sediment transport are solved with the finite volume method and the SIMPLEC algorithm with the momentum interpolation.The computed case of the self-forming meander evolution demonstrates that this model is able to predict the complex fluvial processes in alluvial rivers with bank erosion.

     

/

返回文章
返回