Thursday, 26 July 2018

Types Of Open Channel | Classification Of Open Channel

classification of open channel


Before classification , First of all we should know that What is Open Channel ?
Open Channel : An open channel is a type of channel in which water flows with a free surface. The free surface is subjected to atmospheric pressure.

Classification Of Open Channel :
The classification of open channels is made based on different criteria as follows.

1. Classification Of Open Channel Based On Occurrence : Based on occurrence open channel has two types as below-

  • Natural Channel
  • Artificial/Men Made Channel 
Natural Channel : A Channel which made by nature is call as natural channel.
Example - River
Artificial Channel : A channel which made by Men power is call as artificial channel.
Example - Canal


2. Classification Of Open Channel Based On Shape : Based on Shape open channel has different types as below -
  • Rectangular channel
  • Triangular Channel
  • Trapezoidal Channel
  • Circular Channel
Rectangular Channel : A channel which is rectangular in shape is called rectangular channel.

Triangular Channel : A channel which is triangular in shape is called triangular channel.
Trapezoidal Channel : A channel which is trapezoidal in shape is called trapezoidal channel.
Circular Channel : A channel which is circular in shape is called circular channel.


3. Classification Of Open Channel Based On Change In Slope & Cross Section : Based on Change In Slope & Cross Section open channel has two types as below -
  • Prismatic Channel
  • Non-Prismatic Channel
Prismatic Channel : In this type of channel slope & cross section both do not change.
Non-Prismatic Channel : In this type of channel Both ( slope & cross section ) or one parameter ( slope/cross section ) change.

4. Classification Of Open Channel Based On Boundary : Based on Boundary open channel has two types as below -
  • Rigid Channel
  • Mobile Channel
Rigid channel : In this type of channel boundary of channel do not change.
Example - Lined Channel
Mobile Channel : In this type of channel boundary of channel will change.
Example - River , Unlined Channel.



5. Classification Of Open Channel Based On Slope : Based on Slope open channel has two types as below -
  • Small slope Channel
  • Large Slope Channel
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