Numerical modeling of free and submerged labyrinth weir flow for a large sidewall angle

被引:19
作者
Carrillo, Jose M. [1 ]
Matos, Jorge [2 ]
Lopes, Ruth [3 ]
机构
[1] Univ Politecn Cartagena, Civil Engn Dept, Cartagena, Spain
[2] Univ Lisbon, Inst Super Tecn, CERIS, Lisbon, Portugal
[3] Hidra Hidraul & Ambiente Lda, Lisbon, Portugal
关键词
Labyrinth weir; Discharge coefficient; Submergence; Free surface profile; CFD; Turbulence models; A; R; TEMBHURKAR; B; V; KHODE; P; D; POREY; HYDRAULIC DESIGN;
D O I
10.1007/s10652-019-09701-0
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
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.
引用
收藏
页码:357 / 374
页数:18
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