2000 Volume 44 Pages 605-610
A large-eddy simulation tool is adopted to simulate the three-dimensional flow around the submerged spur-dikes. A numerical method is put forward to compute the three-dimensional flow with free surface and complex boundaries. The numerical method is established on the base of finite-volume/finitedifference method with staggered grid. A method of the equivalent Cartesian grid in a fluid cell, whosevolume is the same with that of the irregular fluid cell, is used to deal with the irregular cells and the eddy viscosity coefficient at the boundary cells in the flow field with complex boundaries. The water surface and the velocity distribution around submerged spur-dikes of simulation are compared with those of experiment. It is shown that the results of simulation are in agreement with those of experiment and it is possible to apply the numerical model to simulate the complex flow with complex boundaries.
