Empirical equation, which relates pressure loss along pipeline (also called head loss), due to fluid friction with pipelines walls along the pipe trajectory to the average cross-sectional velocity
of the fluid flow:
\frac{dp}{dl} = - f \cdot \frac{ \rho \, u^2 \, }{2 d} |
where
| Darcy friction factor | |
| fluid density | |
| pipe diameter |
Physics / Fluid Dynamics / Pipe Flow Dynamics / Fluid friction with pipelines walls