Dimensional Analysis- Buckingham pie theorem solved tutorial problem-01 | Fluid Mechanics

Dimensional Analysis- Buckingham pie theorem solved tutorial problem.
Problem:
Problem-01:
Deduce the general form of the expression for drag force, Fd on a solid sphere of diameter D which is held fixed in a fluid stream that moves at uniform speed U. Begin with the assumption that Fd is some function of U, D,μ, and ρ. Where μ and ρ are fluid viscosity and density respectively. Using this assumption, show that Fd can be expressed in the form F= ρU2D2 ϕ(Re) where Re= Reynold's number= ρUD/μ
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