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What does ‘C’ denote in D = Cl^aρ^bμ^cV^dg^e?

(a) Function

(b) Dimensions

(c) Dimensionless constant

(d) Number of parameters

I have been asked this question in semester exam.

This interesting question is from Rayleighs Method topic in section Dimensional and Model Analysis of Fluid Mechanics

1 Answer

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Best answer
The correct choice is (c) Dimensionless constant

Explanation: ‘C’ in D = Cl^aρ^bμ^cV^dg^e denotes dimensionless constant and a,b,c,d,e, are its exponents. This is the fundamental purpose of Rayleigh’s method.

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