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    Discharge Measurement in Circular Sewer

    Source: Journal of Irrigation and Drainage Engineering:;1997:;Volume ( 123 ):;issue: 002
    Author:
    Giuseppe Oliveto
    ,
    Willi H. Hager
    DOI: 10.1061/(ASCE)0733-9437(1997)123:2(138)
    Publisher: American Society of Civil Engineers
    Abstract: The Sector Venturi is a novel design to determine discharge in sewers. Its main features are simplicity, accuracy of ±5%, and low cost. Further, the modular limit is comparable to standard flumes, and the capacity is equal to similar devices. Based on an optimization procedure, the best geometry was retained. The Sector Venturi is characterized by a ring of variable diameter, in which two sharp-crested sectors are attached. When mounting the Sector Venturi, the ring is expanded to match with the pipe section. The sector elements are sharp crested and have a notch at the invert. The principle of discharge measurement involves critical flow across a constriction. To stabilize the depth reading, holes are drilled in the sectors and two symmetrically arranged containers allow reading of the total head. The discharge is determined with a rating curve. One particular feature of the Sector Venturi is its insensitivity to clogging. As outlined, there are several disadvantages when compared with the pier-shaped Mobile Venturi Flume, but these do not detract from a useful means of discharge measurements in sewage.
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      Discharge Measurement in Circular Sewer

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    http://yetl.yabesh.ir/yetl1/handle/yetl/27778
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    contributor authorGiuseppe Oliveto
    contributor authorWilli H. Hager
    date accessioned2017-05-08T20:48:44Z
    date available2017-05-08T20:48:44Z
    date copyrightMarch 1997
    date issued1997
    identifier other%28asce%290733-9437%281997%29123%3A2%28138%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/27778
    description abstractThe Sector Venturi is a novel design to determine discharge in sewers. Its main features are simplicity, accuracy of ±5%, and low cost. Further, the modular limit is comparable to standard flumes, and the capacity is equal to similar devices. Based on an optimization procedure, the best geometry was retained. The Sector Venturi is characterized by a ring of variable diameter, in which two sharp-crested sectors are attached. When mounting the Sector Venturi, the ring is expanded to match with the pipe section. The sector elements are sharp crested and have a notch at the invert. The principle of discharge measurement involves critical flow across a constriction. To stabilize the depth reading, holes are drilled in the sectors and two symmetrically arranged containers allow reading of the total head. The discharge is determined with a rating curve. One particular feature of the Sector Venturi is its insensitivity to clogging. As outlined, there are several disadvantages when compared with the pier-shaped Mobile Venturi Flume, but these do not detract from a useful means of discharge measurements in sewage.
    publisherAmerican Society of Civil Engineers
    titleDischarge Measurement in Circular Sewer
    typeJournal Paper
    journal volume123
    journal issue2
    journal titleJournal of Irrigation and Drainage Engineering
    identifier doi10.1061/(ASCE)0733-9437(1997)123:2(138)
    treeJournal of Irrigation and Drainage Engineering:;1997:;Volume ( 123 ):;issue: 002
    contenttypeFulltext
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