Description

Precision:

Parameter | Symbol | Value | |
---|---|---|---|

Length (m) | L | ||

Kinematic viscosity (m^{2} s^{-1}) |
ν | ||

Nikuradse roughness (m) | k_{s} |
||

Minor loss coefficient | K | ||

Calculate or specify friction factor? | |||

Darcy friction factor | λ | ||

Diameter (m) | D | ||

Head loss (m) | h | ||

Quantity of flow (m^{3} s^{-1}) |
Q |

Set any two of D, h, Q and calculate the third.

(Note that many engineers use *f* for friction factor, with λ
being equivalent to either *f* or 4*f*. The value here
is 4 times the skin-friction coefficient.)