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Titlebook: Long-Throated Flumes and Broad-Crested Weirs; M. G. Bos Book 1985 Martinus Nijhoff/Dr W. Junk Publishers, Dordrecht 1985 Drainage.boundary

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發(fā)表于 2025-3-21 18:02:02 | 只看該作者 |倒序瀏覽 |閱讀模式
書目名稱Long-Throated Flumes and Broad-Crested Weirs
編輯M. G. Bos
視頻videohttp://file.papertrans.cn/589/588584/588584.mp4
圖書封面Titlebook: Long-Throated Flumes and Broad-Crested Weirs;  M. G. Bos Book 1985 Martinus Nijhoff/Dr W. Junk Publishers, Dordrecht 1985 Drainage.boundary
描述In the context of water management, structures that measure the flow rate in open channels are used for a variety of purposes: (i) In hydrology, they measure the discharge from catchments; (ii) In irrigation, they measure and control the distribution of water at canal bifurcations and at off-take structures; (iii) In sanitary engineering, they measure the flow from urban areas and industries into the drainage system; (iv) In both irrigation and drainage, they can control the upstream water at a desired level. This thesis represents an attempt to place such flow measurements on a solid foundation by explaining the theory of water flow through ‘long-throated flumes‘ and their hydraulically related ‘broad-crested weirs‘. On the basis of this theory, and on practical experience, these structures are recommended for use whenever the water surface in the channel at the measuring site can remain free. The thesis concludes with a design procedure that will facilitate the application of these structures. The idea to undertake research on discharge measurement structures was born upon my appointment as the first civil engineer with the International Institute for Land Reclamation and Improve
出版日期Book 1985
關(guān)鍵詞Drainage; boundary layer; capacity; control; design; development; energy; flow; history; measurement; model; st
版次1
doihttps://doi.org/10.1007/978-94-009-6225-5
isbn_softcover978-94-009-6227-9
isbn_ebook978-94-009-6225-5
copyrightMartinus Nijhoff/Dr W. Junk Publishers, Dordrecht 1985
The information of publication is updating

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發(fā)表于 2025-3-21 21:39:49 | 只看該作者
ogy, they measure the discharge from catchments; (ii) In irrigation, they measure and control the distribution of water at canal bifurcations and at off-take structures; (iii) In sanitary engineering, they measure the flow from urban areas and industries into the drainage system; (iv) In both irriga
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地板
發(fā)表于 2025-3-22 06:43:05 | 只看該作者
M. G. Bosüber hinaus hatte sich auch das Kaufverhalten vieler Kunden ver?ndert. Die Kunden fragten nicht mehr überwiegend Pumpen im mittleren Leistungsbereich nach, sondern verlangten zunehmend kundenindividuellere Pumpen. Anfragen von Wasserwerken, die entweder Wasserpumpen wünschten, die leistungsst?rker o
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發(fā)表于 2025-3-22 12:15:16 | 只看該作者
M. G. Bosüber hinaus hatte sich auch das Kaufverhalten vieler Kunden ver?ndert. Die Kunden fragten nicht mehr überwiegend Pumpen im mittleren Leistungsbereich nach, sondern verlangten zunehmend kundenindividuellere Pumpen. Anfragen von Wasserwerken, die entweder Wasserpumpen wünschten, die leistungsst?rker o
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History of flumes,es, Hanks, and Jurinak 1982). The irrigated area increased rapidly during the period 1920–40, and remained about constant during World War II and the subsequent period of decolonization. By 1955, the irrigated area was about 120 million ha (Gulhati 1955), and has now increased to about 200 million h
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發(fā)表于 2025-3-23 07:40:07 | 只看該作者
Required head loss over the structure,on between the upstream sill-referenced head and the flow rate in the structure. If the downstream sill-referenced head is sufficiently low with respect to the upstream sill-referenced head, modular flow will occur. With high downstream heads, the flow at the control section cannot become critical a
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