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Show by dimensional analysis for forced convection,

Nu=φ(Re,Pr)

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The forced convection heat transfer phenomenon can be influenced by the variables given in following table.

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These seven variables are expressed in four primary dimensions (M,L,T,t) therefore, according to Buckingham pi theorem, the independent dimensionless group are:

= no. of variable affecting the phenomenon – No. of primary dimensions used. …

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