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wind tunnel scaling question

  • 17-06-2013 02:40PM
    #1
    like a ninja
    Registered Users, Registered Users 2 Posts: 23 ✭


    My question is in relation to scaling of wind speed in a wind tunnel. Lets say i had a 1/100 scale model in a wind tunnel and the real life application is ran at 65m/s. According to my research it tells me that froude scaling theory is used where fr = v^2/Lg (v=velocity,L = lenght) from this it tells me that the wind tunnel test should be ran at 6.5m/s, does sound correct?


Comments

  • #2
    bnt
    Registered Users, Registered Users 2 Posts: 13,182 ✭✭✭✭bnt


    I don't know that Froude Scaling is the best tool for this job. What about using a Reynolds Number? It's widely understood and used for these questions, AFAIK.

    You are the type of what the age is searching for, and what it is afraid it has found. I am so glad that you have never done anything, never carved a statue, or painted a picture, or produced anything outside of yourself! Life has been your art. You have set yourself to music. Your days are your sonnets.

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  • #3
    Darren1o1
    Registered Users, Registered Users 2 Posts: 744 ✭✭✭Darren1o1


    like a ninja wrote: »
    My question is in relation to scaling of wind speed in a wind tunnel. Lets say i had a 1/100 scale model in a wind tunnel and the real life application is ran at 65m/s. According to my research it tells me that froude scaling theory is used where fr = v^2/Lg (v=velocity,L = lenght) from this it tells me that the wind tunnel test should be ran at 6.5m/s, does sound correct?

    Try fluid mechanics by Frank White. It is the dimensional analysis section. I believe reynolds number covers it. What are you looking to solve as a cause? Coefficient of force?


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