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Determine the length of the backwater curve by an afflux of 2m in a rectangular channel of width 40m and depth 2.5m. The slope of the bed is given as 1 in 11000. Take Mannings constant as 0.03
written 6.3 years ago by gravatar for mitali.poojari1908 mitali.poojari1908 • 400 modified 2.4 years ago by gravatar for sagarkolekar sagarkolekar ★ 11k
applied hydraulics
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written 2.4 years ago by gravatar for Krishna_Agrawal Krishna_Agrawal • 2.7k •   modified 2.4 years ago

$Given,$

$Bed$ $width$ $(b) = 40m$

$Afflux$ $(y_2 - y_1) = 2m$

$Depth$ $of$ $flow$ $(y_1) = 2.5m$

$Depth$ $of$ $flow$ $of$ $downstream$ $(y_2) = 2+2.5m = 4.5$

$Bed$ $slope$ $S_0$ = ${1 \over 11000}$

$Manning's$ $constant$ $(N)$= $0.03$


$Area$ $of$ $flow$ $at$ $Section$ $ ; $ $A_1 = by_1 …

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