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首页> 外文会议>Conference on Fluvial Hydraulics >Coupled numerical simulation of flow and bed and suspended sediment transport over dunes based on the Immersed Boundary method
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Coupled numerical simulation of flow and bed and suspended sediment transport over dunes based on the Immersed Boundary method

机译：基于浸没边界法的沙丘耦合数值模拟及悬浮沉积物运输

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In the present study, numerical simulations of the unidirectional flow over dunes, coupled with bed and suspended sediment transport, are presented. The simulations are based on the numerical solution of the Navier-Stokes equations for incompressible flow and the advection-diffusion equation for the suspended load, while empirical formulas are used for the bed load. A fractional time-step scheme is used for the temporal discretization, while finite differences are used for the spatial discretization on a Cartesian grid. The Immersed Boundary method is implemented for the imposition of fluid and sediment boundary conditions on the dune surface. We examined cases of three consecutive dunes.
机译：在本研究中，提出了在沙丘上的单向流动，与床和悬浮沉积物转运的单向流动的数值模拟。该模拟基于对悬浮载荷的不可压缩流动的Navier-Stokes方程的数值解决方案和悬浮载荷的平坦扩散方程，而经验公式用于床载荷。分数时间步骤方案用于时间离散化，而有限差异用于笛卡尔电网上的空间离散化。实施浸没边界法用于施加在沙丘表面上的流体和沉积物边界条件。我们检查了三个连续沙丘的案例。

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