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Buckingham pi theorem

  1. May 21, 2016 #1
    1. The problem statement, all variables and given/known data
    https://projects.exeter.ac.uk/fluidflow/Courses/FluidDynamics3211-2/DimensionalAnalysis/dimensionalLecturese4.htmlaccording to this link , when we form the pi group , we need to put an exponent for the non-repeating variable ,( in this case , delta P is non-repeating variable , D , v and rho are repeating variable) FXVC7K7.png http://www.efm.leeds.ac.uk/CIVE/CIVE1400/Section5/dimensional_analysis.htm (refer to 7 )however , in this case , we do not have to put exponent on the non-repeating variable , the author just putF = (MLT^-2 ) instead of (MLT^-2)^d k9bJMDc.png

    2. Relevant equations


    3. The attempt at a solution
    Which is correct ? the first or second one ? is exponential needed for non-repeating variable ?
    P/s : this is not same as the question i posted in another thread....
     
  2. jcsd
  3. May 21, 2016 #2
  4. May 21, 2016 #3
    anyone can reply ?
     
  5. May 22, 2016 #4
    which is correct ?
     
  6. May 31, 2016 #5
    bump
     
  7. May 31, 2016 #6
    is it necessary to put exponent of d ? ??
     
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