• Welcome to engineeringclicks.com
  • What does the 'whirl velocity' means??

    Discussion in 'Calculations' started by hardsteal, May 3, 2014.

    1. hardsteal

      hardsteal Member

      Mar 2011
      Likes Received:
      In fluid mechanics and in case of Hydraulic turbines, we use the velocity triangles to solve problems. But I don't understand what does whirl velocity means in those triangles... :confused:

      I tried to search the internet, but I got no satisfactory answer there.. :(
    3. dtbrough

      dtbrough New Member

      May 2014
      Likes Received:
      Just had a quick search for whirl velocity and I understand it as the velocity radially around the turbine, i.e. the velocity of the fluid in the plane of the turbine blade rotation, and thus using the triangle and Pythagoras. Linear velocity squared (V^2), Work velocity squared (Vw^2), Absolute velocity squared (Va^2),

      Sqrt((V^2) x (Vw^2)) = Va

      So the whirl velocity is combined with the linear velocity to get the absolute velocity the fluid.

      I hope this helps

    Share This Page

    1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies.
      Dismiss Notice