Relates pressure drop \Delta p = p_{in} - p_{out} on the choke with the flowrate through the choke q arising from fluid friction with choke elements (ISO5167):
(1) | \Delta p = p_{in} - p_{out} = \frac{ \rho \cdot (1- \beta^4)}{0.125 \, \pi^2 \, d^4 \, C_d^2 \, \epsilon^2} \cdot q^2 |
where
\rho | fluid density |
d | orifice diameter |
D | pipe diameter |
\beta = \frac{d}{D} | choke narrowing ratio |
C_d | |
\epsilon | expansion factor |
See also
Physics / Fluid Dynamics / Pipe Flow Dynamics / Pipe Flow Simulation (PFS)
[ Orifice Plate Discharge Coefficient ] [ Orifice Plate Expansion Factor @ model ]
Pipeline Engineering / Pipeline / Choke
[ Euler equation ] [ Water Pipe Flow @model ]