Calculation of free-surface profile over a rectangular broad-crested weir

被引：56

作者：

Sarker, MA

Rhodes, DG ^{[1
]}

机构：

[1] Cranfield Univ, Royal Mil Coll Sci, Dept Syst Engn, Swindon SN6 8LA, Wilts, England

[2] Posford Haskon Ltd, Comp Modelling Grp, Coastal & Rivers Div, Peterborough PE3 8DW, England

来源：

FLOW MEASUREMENT AND INSTRUMENTATION | 2004年 / 15卷 / 04期

关键词：

broad-crested weir; weir flow; CFD; free-surface modelling;

D O I：

10.1016/j.flowmeasinst.2004.02.003

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Measurements of the free-surface profile over a laboratory-scale, rectangular broad-crested weir were compared with numerical calculations using commercial software. Although the geometry of the weir is simple, the fluid mechanics is complex with regions of separated flow that affect its hydrometric performance. For the given flow rate, the prediction of the upstream water depth was excellent and the rapidly-varied flow profile over the crest was reproduced quite well. In the supercritical flow downstream, a stationary wave profile was observed and reproduced in form by the calculations. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：215 / 219

页数：5

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