Energy And Momentum Coefficients For Wide
Compound Channels
Author(s)
P. K. Mohanty, S. S. Dash, K. K. Khatua & K. C. Patra
Abstract
Experiments were conducted in a straight smooth compound trapezoidal main
channel flanked by two symmetrical floodplains having width ratio value ≈12.
The point velocities were measured throughout the compound cross section and
isovel patterns were analyzed to determine the values of kinetic energy
coefficient (α) and momentum coefficient (β) under varying flow conditions of
Froude no. between 0.277 to 0.444 and relative depth of between 0.11 and 0.43.
The values obtained for α and β are 2.09 and 1.39 respectively, which are
significantly higher than their respective values reported by previous
researchers for compound cross sections of different size and shape. New
relations are suggested to determine approximate values of α and β with R2
values more than 0.97. It is hoped that the present findings will provide new
guidelines for design and research in trapezoidal compound channels
Keywords: compound channel, velocity distribution. kinetic energy coefficient,
momentum coefficient.
Keywords
Keywords: compound channel, velocity distribution. kinetic energy coefficient,
momentum coefficient.
Related Book
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