In this study, the effect of downstream lakes or ponds on dam break flow was investigated. To do this, a robust finite volume method with Harten-Lax-van Leer contact surface Riemann’s solver technique for flux evaluation has been used. For space discretization, a triangular mesh grid was used and a complete software with mesh generator was developed. A reservoir with a long downstream channel was assumed, and many scenarios such as a single lake with various lengths, widths and positions along the channel and multiple consecutive lakes as symmetric and non-symmetric with respect to the channel centerline were considered. The numerical modeling of dam break flow along the channel showed that the downstream lake can decrease the speed and depth of the dam break wave front and the amount of this wave attenuation was very dependent on the storage volume of the lake and vortexes which were established in the lake.

在这项研究中，研究了下游湖泊或池塘对溃坝水流的影响。为此，使用了具有Harten-Lax-van Leer接触面Riemann求解器技术的鲁棒有限体积方法进行磁通评估。对于空间离散化，使用了三角形网格，并开发了带有网格生成器的完整软件。假定一个下游河道较长的水库，并考虑了许多情况，例如沿河道长度，宽度和位置各不相同的单个湖泊，以及相对于河道中心线对称和非对称的多个连续湖泊。