Crump weirs are commonly used in the UK for discharge measurement in rivers. Like the broad-crested weir it relies on critical conditions occurring for the discharge formula to work. It has a triangular shaped section (Figure 7.5c near the top of the page).
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www.jfccivilengineer.com/broad_crested_weirs_2.htm
www.jfccivilengineer.com/broad_crested_weirs_2.htm
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onlinechannel14.php: Discharge over a broad-crested weir ... ; The broad-crested weir ... Weir length L:
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onlinechannel.sdsu.edu/onlinechannel14.php
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Weir - Wikipedia, the free encyclopedia
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A weir (pronounced /ˈwɪər/ ), also known as a lowhead dam , is a small overflow-type dam commonly used to raise the level of a river or stream. Weirs have traditionally been used to create m...
en.wikipedia.org/wiki/Weir
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Modeling as a broad-crested weir ... Many questions arise about the proper application of the broad-crested weir equation. In general, the broad-crested weir capability is useful only in cases where the discharge coefficient varies with head.
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www.hydrocad.net/weir1.htm
www.hydrocad.net/weir1.htm
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Common weir constructions are the rectangular weir, the triangular or v-notch weir, and the broad-crested weir. Weirs are called sharp-crested if their crests are constructed of thin metal plates, and broad-crested if they are made of wide timber or concrete.
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www.engineeringtoolbox.com/weirs-flow-rate-d_592.html
www.engineeringtoolbox.com/weirs-flow-rate-d_592.html
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A broad-crested weir has a crest that extends horizontally in the direction of flow far enough to support the nappe (sheet of water flowing over the crest of the weir) so that hydrostatic pressures are fully developed for at least some short distance.
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docs.bentley.com/en/HMFlowMaster/FlowMasterHelp-06-51.h...
docs.bentley.com/en/HMFlowMaster/FlowMasterHelp-06-51.html
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The flow features over the broad-crested weir with vertical upstream wall and sharp-crested corner are analyzed experimentally. Only the long-crested weir is considered, for which the discharge coefficient remains practically constant.
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www.pubs.asce.org/WWWdisplay.cgi?9400234
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Experiments with the V-shaped broad-crested weirs have been carried out in order to investigate the influence of a boundary layer above the crest. ... The weir can be constructed with a fixed crest or a movable crest in vertical runways. The maximum discharge depends on the chosen dimensions. The structure is a suitable...
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www.pubs.asce.org/WWWdisplay.cgi?8200581
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In the case of a free overfall broad-crested weir the equation of flow has the follow- ing form: ... the broad-crested weir should be considered submerged, ...
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www.springerlink.com/index/4554r66v127577tn.pdf
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