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Simplified design of flumes and weirs
Author(s) -
Wahl Tony L.,
Clemmens Albert J.,
Replogle John A.,
Bos Marinus G.
Publication year - 2005
Publication title -
irrigation and drainage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 38
eISSN - 1531-0361
pISSN - 1531-0353
DOI - 10.1002/ird.160
Subject(s) - flume , engineering , calibration , software , channel (broadcasting) , flow (mathematics) , head (geology) , hydraulic head , flexibility (engineering) , civil engineering , geotechnical engineering , computer science , mathematics , geology , electrical engineering , statistics , geometry , geomorphology , programming language
Long‐throated flumes and broad‐crested weirs have become accepted standards for open‐channel flow measurement during the past two decades. These structures offer the accuracy and reliability of critical‐depth flow measurement, theoretically based calibrations, the lowest head loss requirement of any critical flow device, and extraordinary design and construction flexibility. Computer software developed in recent years has streamlined the design and calibration process. The software, WinFlume, has been described in several papers and a recent text. Although WinFlume is very easy to use, there is still a need for simplified design and calibration tools for situations where use of the computer model is not possible or desirable. This paper combines several previous efforts to provide such tools in both metric and English units for the most typical measurement applications encountered in irrigation and drainage systems. Pre‐computed designs for trapezoidal broad‐crested weirs, long‐throated flumes with rectangular control sections, broad‐crested weirs in circular pipes, V‐shaped long‐throated flumes, and portable RBC flumes are presented in easy‐to‐use tables that provide head and discharge ranges, construction dimensions, head loss requirements, and flume rating equation parameters. The use of the tables is demonstrated with examples, and construction methods are illustrated. Copyright © 2005 John Wiley & Sons, Ltd.