Relates pressure drop p_{out} - p_{in} on the choke with the flowrate through the choke q:
(1) | p_{out} - p_{in} = \frac{\rho}{8.05 \, d^4_D \, C_D^2} \cdot q^2 |
where
\rho | fluid density |
d_D | choke diameter |
C_D | choke coefficient (see (2)) |
(2) | C_D = \frac{d_D}{d} + 0.3167 \cdot \left( \frac{d}{d_D} \right)^{0.6} + 0.025 \cdot \big [ \log {\rm Re} - 4 \big ] |
where
d | internal diameter of the incharge/discharge pipe |
{\rm Re} | Reynolds number |
See also
Physics / Fluid Dynamics / Pipe Flow Dynamics / Pipe Flow Simulation (PFS)
[ Euler equation ]