Critical Depth of Open-Channel Flow
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For a given value of specific energy, the critical depth gives the greatest discharge, or conversely, for a given discharge, the specific energy is a minimum for the critical depth.
For rectangular channels, the critical depth, dc ft (m), is given by
dc =[Q2/b2g]1/3
where
dc =critical depth, ft (m)
Q= quantity of flow or discharge, ft3/s (m3/s)
B= width of channel, ft (m)
Hi,
It is good………
this is what i’ve been looking for..
simple and straightforward!
thanks
that was short and sharp
What does q equal if its a wide channel ?
q = Q/b ; (m³s-1/m)
b = the channel width ; (m)
Q = flow rate ; (m3/s)
The concept of critical depth for engineer is like you wrote here. That is great way. But the meaning critical depth is that water molucule upstream and downstream of the critical depth wont comunicate. It is a point of discontinity.
if we introduce more formula for tripoziod channel it would be useful
The specific energy of triangle channel for critical depth