水流与潮流作用下沙丘演变数值模拟

The dune evolution simulation Under the action of the water and tide

泥沙问题逐渐成为水利工程中的一个重要课题,其对港口航道等与人们生产生活相关方面的影响越来越显著。本文应用ADI格式离散求解浅水方程,并结合采用Euler-WENO方法求解地形演变方程,经验证得到了较好的对比结果。建立的模型应用于对河口拦门沙演变的研究,探讨了水流大小不同以及在潮流作用情况下拦门沙的最终演变结果。

The problem of sediment in water conservancy projects is becoming an important topic ,and its im-pact on the port channel and other relevant aspects of the production and living with people more and more significant.In this paper,ADI scheme for solving shallow water equations discrete and combined using the Eu-ler-WENO method for solving evolution equations terrain ,proven to get a better comparison of results.Model applied to the study of the evolution of the estuary sandbar discussed different size and flow conditions in ef-fect under the tide sandbar eventually evolved results.