Drag Characteristics of Two-Dimensional Sills in Forced Hydraulic Jumps
DSpace at IIT Bombay
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Title |
Drag Characteristics of Two-Dimensional Sills in Forced Hydraulic Jumps
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Creator |
MUDGAL, BV
PANI, BS |
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Subject |
Forced jump
Wall jet analogy Hydraulic jump Drag force Force on sill Dynamic pressure model VERTICAL SILL WALL JETS FLUCTUATIONS FLOW |
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Description |
Sills and other appurtenances are often used to aid the formation of a hydraulic jump in a stilling basin. The drag force acting on a sill in forced hydraulic jump depends on the initial Froude number F-1, the height of the sill S, and its distance x(s), measured from the toe of the jump. The forward flow in the main body of the hydraulic jump behaves like a wall jet. Therefore, based on observed data, simple relationships were developed to predict the maximum velocity U-m and the half-width b of a free hydraulic jump. These are coupled with a dynamic pressure model that expresses the local drag coefficient C-d delta of a sill in a plane turbulent wall jet. The drag coefficient for the sill in a forced hydraulic jump C-d was obtained by a simple transformation involving the wall jet parameters. DOI: 10.1061/(ASCE)HY.1943-7900.0000539. (C) 2012 American Society of Civil Engineers.
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Publisher |
ASCE-AMER SOC CIVIL ENGINEERS
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Date |
2014-10-15T15:21:25Z
2014-10-15T15:21:25Z 2012 |
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Type |
Article
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Identifier |
JOURNAL OF HYDRAULIC ENGINEERING-ASCE, 138(5)462-466
http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000539 http://dspace.library.iitb.ac.in/jspui/handle/100/15139 |
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Language |
en
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