• Welcome to engineeringclicks.com
  • Convert wind speed to Force in Newtons?

    Discussion in 'The main mechanical design forum' started by aknotley, Aug 27, 2009.

    1. aknotley

      aknotley Active Member

      Joined:
      Jul 2009
      Posts:
      32
      Likes Received:
      0
      Does anyone know how to calculate how much force /pressure from wind at different speeds on a flat surface.

      Is there a simple calculation that can be used? Or is there a table that can be used

      I would like to know how much force is cause by a wind speed of 125mph on a flat surface. It would be good to know the force exerted for other speeds too
       
    2.  
    3. aknotley

      aknotley Active Member

      Joined:
      Jul 2009
      Posts:
      32
      Likes Received:
      0
    4. bishal

      bishal New Member

      Joined:
      Sep 2009
      Posts:
      1
      Likes Received:
      0
      If you consider air as a fluid from the fluid dynamics you can calculate the force as rho times velocity times area. rho is density of air, velocity is of air and area is the area of the flat surface. Hope this will help.

      thanks
       
    5. Dana

      Dana Well-Known Member

      Joined:
      Sep 2010
      Posts:
      341
      Likes Received:
      3
      Quite simple, but I'll give it in Imperial units since I'm one of those dumb colonials

      dynamic pressure q = ½?v² where ? is the air density (.002378 slug/ft³) v is velocity in ft/s, and q is in lbs/ft²

      Thus a 125mph wind impinging directly on a flat surface exerts a dynamic pressure of 40 lbs/ft²
       

    Share This Page