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Labyrinth Seal Leakage Calculation Help Please?

  1. Jul 28, 2012 #1

    FFX

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    I'm studying mechanical engineering, just have a question on the labyrinth seal leakage equation.

    More specifically, the expansion ratio formula.

    7qsh.png


    What does the '1n' stand for?
    With 'n + 1n', I'm assuming those two n's are different since one looks like it's in italics and the other looks normal. Can someone please clear this up for me? I understand the rest of the equation, I just can't find what '1n' stands for in my textbook.
     
  2. jcsd
  3. Jul 28, 2012 #2

    gneill

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    Staff: Mentor

    Perhaps it's meant to be the natural log function ln(x)? That's the log base e of its argument.
     
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