In recent decades, the advancement of knowledge on the hydraulics of labyrinth weirs has resulted mainly from physical modeling. In this study, numerical simulations of free-flow and submerged labyrinth weirs were conducted for a large sidewall angle, using commercially available computational fluid dynamics software, for three different turbulence models. These simulations were compared with experimental data gathered in a fairly large-scale facility. In general, very good agreement was found on the discharge capacity, in free-flow and submerged conditions, regardless of the turbulence model tested. A dimensionless approaching free surface profile, which was virtually independent of the relative upstream head, was obtained. Downstream of the weir, under subcritical flow conditions, the numerical flow depths agreed reasonably well with the corresponding experimental data.

中文翻译：

---

大侧壁角自由和淹没迷宫堰流的数值模拟

在最近的几十年中，迷宫堰水力学知识的发展主要来自物理模型。在这项研究中，使用可商购的计算流体动力学软件，针对三种不同的湍流模型，对大侧壁角进行了自由流动和浸没式迷宫堰的数值模拟。将这些模拟与在相当大规模的设施中收集的实验数据进行了比较。通常，在自由流动和淹没条件下，无论测试的湍流模型如何，在排放能力上都取得了很好的一致性。获得了无量纲的接近自由表面轮廓，该轮廓实际上独立于相对上游压头。在亚临界流动条件下，堰的下游，