Stokes Region Maximum Droplet Diameter Formula
Stokes Region Maximum Droplet Diameter calculates approximate maximum droplet diameter for stokes region for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (K_CR, mu_c, g, rho_c, rho_p) are known and the assumptions behind the cited well performance relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, D_p_max equals 0.000042 m.
0.033
0.02
9.80665
30
700
Inputs
K_CR
dimensionlessStokes Region Reynolds Boundary Constant
mu_c
cPContinuous Phase Viscosity
g
m/s2Gravitational Acceleration
rho_c
kg/m3Continuous Phase Density
rho_p
kg/m3Droplet Phase Density
Outputs
D_p_max
Approximate Maximum Droplet Diameter for Stokes Region
K_CR
Stokes Region Reynolds Boundary Constant
mu_c
Continuous Phase Viscosity
g
Gravitational Acceleration
Source and review
reviewedGPSA Engineering Data Book, Section 7 Separation Equipment, Eq. 7-6 and KCR guidance for Re = 2.
Source