PPT: Open Channel Flow | Fluid Mechanics for Civil Engineering - Civil Engineering (CE) PDF Download

 Page 1


OPEN CHANNEL FLOW
(Uniform Flow)
Page 2


OPEN CHANNEL FLOW
(Uniform Flow)
Types of Channels
? Open channel flow is a flow which has a free surface and
flows due to gravity.
? Pipes not flowing full also fall into the category of open
channel flow
? In open channels, the flow is driven by the slope of the
channel rather than the pressure
Page 3


OPEN CHANNEL FLOW
(Uniform Flow)
Types of Channels
? Open channel flow is a flow which has a free surface and
flows due to gravity.
? Pipes not flowing full also fall into the category of open
channel flow
? In open channels, the flow is driven by the slope of the
channel rather than the pressure
Types of Channels
? Open channel flow is a flow which has a free 
surface and flows due to gravity.
? Pipes not flowing full also fall into the 
category of open channel flow
? In open channels, the flow is driven by the 
slope of the channel rather than the pressure
Page 4


OPEN CHANNEL FLOW
(Uniform Flow)
Types of Channels
? Open channel flow is a flow which has a free surface and
flows due to gravity.
? Pipes not flowing full also fall into the category of open
channel flow
? In open channels, the flow is driven by the slope of the
channel rather than the pressure
Types of Channels
? Open channel flow is a flow which has a free 
surface and flows due to gravity.
? Pipes not flowing full also fall into the 
category of open channel flow
? In open channels, the flow is driven by the 
slope of the channel rather than the pressure
Types of Flows
1. Steady and Unsteady Flow
2. Uniform and Non-uniform Flow
3. Laminar and Turbulent Flow
4. Sub-critical, Critical and Super-critical Flow
Page 5


OPEN CHANNEL FLOW
(Uniform Flow)
Types of Channels
? Open channel flow is a flow which has a free surface and
flows due to gravity.
? Pipes not flowing full also fall into the category of open
channel flow
? In open channels, the flow is driven by the slope of the
channel rather than the pressure
Types of Channels
? Open channel flow is a flow which has a free 
surface and flows due to gravity.
? Pipes not flowing full also fall into the 
category of open channel flow
? In open channels, the flow is driven by the 
slope of the channel rather than the pressure
Types of Flows
1. Steady and Unsteady Flow
2. Uniform and Non-uniform Flow
3. Laminar and Turbulent Flow
4. Sub-critical, Critical and Super-critical Flow
1. Steady and Unsteady Flow
? Steady flow happens if the conditions (flow rate,
velocity, depth etc) do not change with time.
? The flow is unsteady if the depth is changes with
time