Written by Jerry Ratzlaff on . Posted in Classical Mechanics

length bannerLength (also called distance) is the dimension from one point to another point or the dimension from one end to the other end of an object.

Characteristic Length

Characteristic length ( \(l_c\) ) is the scale of a physical system.  The length is used in 2D and 3D systems for Fluid Dynamics and Thermodynamics defining the parameter of the system.

Examples of:

Characteristic Length Formula

\(\large{ l_c = \frac{ V } { A }  }\)         


\(\large{ A }\) = surface area of the body

\(\large{ l_c }\) = characteristic length

\(\large{ V }\) = volume of the body