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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
 
Creator MUDGAL, BV
PANI, BS
 
Subject Forced jump
Wall jet analogy
Hydraulic jump
Drag force
Force on sill
Dynamic pressure model
VERTICAL SILL
WALL JETS
FLUCTUATIONS
FLOW
 
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.
 
Publisher ASCE-AMER SOC CIVIL ENGINEERS
 
Date 2014-10-15T15:21:25Z
2014-10-15T15:21:25Z
2012
 
Type Article
 
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
 
Language en