Arced Labyrinth Weirs

作者：Crookston B M; Tullis B P^*

来源：Journal of Hydraulic Engineering, 2012, 138(6): 555-562.

DOI：10.1061/(ASCE)HY.1943-7900.0000553

• Arced labyrinth weir
• Projecting labyrinth weir
• Labyrinth weir
• Head-discharge relationship
• Radial weir
• Local submergence

The discharge capacity and hydraulic efficiency of a labyrinth weir can be increased with an Arced cycle configuration. An Arced geometric layout for labyrinth weirs is presented, including nomenclature for arc-specific geometric variables. Discharge coefficients as a function of H-T/P for half-round trapezoidal Arced labyrinth weirs with 6 and 12 degrees sidewall angles are also presented. The hydraulic performance of the tested Arced labyrinth weir geometries is compared to Projecting and in-channel labyrinth configurations and to an arced weir (horseshoe weir) with a half-round crest, including the effects of approaching flow conditions and local submergence. Differences between geometrically similar and geometrically comparable Arced labyrinth weirs are identified and discussed. DOI: 10.1061/(ASCE)HY.1943-7900.0000553.

• 出版日期2012-6