Definition:Reynolds Number

Definition

Definition Let $B$ be a body $B$ passing through a fluid $F$.

The Reynolds number $\mathrm {Re}$ for $B$ is defined as:

$\mathrm {Re} = \dfrac {v l} \nu$

where:

$v$ is the speed of $B$ through $F$

$L$ is a representative length of $B$

$\nu$ is the kinematic viscosity of $F$.

Also see

• Results about the Reynolds number can be found here.

Source of Name

This entry was named for Osborne Reynolds.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): drag
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): drag