Question

Why does Rayleigh’s method have limitations?

(a) To many variables

(b) Format

(c) Exponents in between variables

(d) Many exponents

The question was posed to me in a national level competition.

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

Answer 1

Right option is (c) Exponents in between variables

For explanation: The main limitation of the Rayleigh’s method is that it has exponential relationship between the variables. It makes it more complex for solving. Since, more variables with exponents will lead to a confusion in the solving process.