Tuesday, December 30, 2014

Free and Forced Vortex flow with Examples

Vortex flow is defined as the flow of a fluid along a curved path or the flow of a rotating mass of fluid is known as Vortex flow. The following are the two types of Vortex flow:
  1. Free Vortex Flow and
  2. Forced Vortex Flow 

Free Vortex Flow

When no external torque is required to rotate the fluid mass that type of flow is called free vortex flow.
Examples:
  • Flow of liquid through a hole provided at the bottom of the container
  • Flow through kitchen sink
  • Draining the bath tub
  • Flow of liquid around a circular bend in pipe
  • A whirlpool in a river
  • The flow fields due to a tornado.

Forced Vortex Flow

Forced vortex flow is defined as that type of vortex flow in which some external torque is required to rotate the fluid mass.
Examples:
  • Flow of water through the runner of a turbine
  • Flow of liquid through the passage of impeller of centrifugal pumps
  • Rotation of water in a washing machine

14 comments:

  1. UnknownNovember 30, 2016 at 4:26 AM

    Very helpful. Simple and clear. Cheers!

    ReplyDelete
  2. David makuthuDecember 10, 2016 at 4:03 AM

    Wonderful.i like it,,,helpful

    ReplyDelete
  3. SathishJuly 16, 2017 at 9:48 PM

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  4. leela mohanJuly 16, 2017 at 11:04 PM

    Very good blog.Very useful for people who are into Whirlpool Call Centre in Hyderabad

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  5. UnknownJuly 17, 2017 at 12:41 PM

    why free vortex flow is irrotational?

    ReplyDelete
  6. UnknownDecember 10, 2017 at 11:48 AM

    Bcz, streamline flow

    ReplyDelete
  7. Gaurav Singh RajputMay 15, 2018 at 2:14 AM

    2018 ISRO exam, in centrifugal pumps water leaving the impeller is given as free vortex flow.

    ReplyDelete
  8. UnknownJune 29, 2018 at 5:59 AM

    Flow inside the impeller is forced vortex but leaving the impeller is free vortex

    ReplyDelete
  9. UnknownJuly 31, 2018 at 2:28 AM

    I need more examples

    ReplyDelete
  10. UnknownOctober 20, 2019 at 5:44 PM

    Thanx

    ReplyDelete
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  12. UnknownJanuary 29, 2021 at 4:19 AM

    Best example

    ReplyDelete
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