Question

Using dimensional analysis, find dimension of Reynolds’s number in the given formula.

Vc =Nƞ/ρD

Answer 1

Explanation:

A. [L0M0T0]

C. [L-1MT]

D. [LMT-1]

Solution. Reynold's number describes the ratio of inertial force per unit area to viscous forcer per unit area for a flowing fluid. Thus, Reynold's number is the ratio of two physical quantity of same dimension which cancel out each other.