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Reynold No. for Airfoil

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Old   October 20, 2000, 07:34
Default Reynold No. for Airfoil
  #1
Apurva Shukla
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Hi,

Although the question is too elementary, i want to know what is the parameter(eg. chords, thickness or something else ) taken for calculation of Reynolds no. in case of Airfoils.

Thanks

Apurva
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Old   October 20, 2000, 08:14
Default Re: Reynold No. for Airfoil
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clifford bradford
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the reference length is the chord
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Old   October 20, 2000, 11:47
Default Re: Reynold No. for Airfoil
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John C. Chien
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(1). You are free to define a Reynolds number based on any characteristic length. (2).For example, a Reynolds number based on the boundary layer momentum thickness on the airfoil. Or a Reynolds number based on the stream-wise distance of the boundary layer. In this case, it is a function of the distance measured from the stagnation point along the airfoil surface. (3). Characteristic length means that it is used for a specific purpose of analysis of the flow.
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