PO.FRAC.Proppant.Vs.Stokes
Description
Stokes settling velocity (infinite dilution), [ft/min].
Syntax
=PO.FRAC.Proppant.Vs.Stokes(dp, Rho_p, Rho_f, Ul)Parameters
| Parameter | Description |
|---|---|
| dp | Particle diameter, [inches]. |
| Rho_p | Proppant density, [lb/gal]. |
| Rho_f | Fluid density, [lb/gal]. |
| Ul | Fluid viscosity, [cp]. |
SI Unit Version
Lambda Name
PO.FRAC.Proppant.Vs.Stokes.SIFormula
=LAMBDA(dp, Rho_p, Rho_f, Ul, LET(
dp_in, PO.UnitConverter(dp, "cm", "in"),
Rho_p_lbgal, PO.UnitConverter(Rho_p, "kg/m3", "lb/gal"),
Rho_f_lbgal, PO.UnitConverter(Rho_f, "kg/m3", "lb/gal"),
result_ftmin, PO.FRAC.Proppant.Vs.Stokes(dp_in, Rho_p_lbgal, Rho_f_lbgal, Ul),
PO.UnitConverter(result_ftmin, "ft/min", "m/min")))SI Parameters
| Parameter | Unit | Description |
|---|---|---|
dp |
cm | Particle diameter, [cm] |
Rho_p |
kg/m3 | Proppant density, [kg/m3] |
Rho_f |
kg/m3 | Fluid density, [kg/m3] |
Ul |
- | Fluid viscosity, [cP] |
How to save as a reusable Excel function
LAMBDA is a built-in Excel feature (Microsoft 365) that lets you create custom functions without VBA. The formula above works as-is when pasted into a cell.
To save a LAMBDA as a reusable named function:
- Go to Formulas → Name Manager → New
- Enter a name, e.g.
PO.FRAC.Proppant.Vs.Stokes.SI - In Refers to, paste the LAMBDA formula without the trailing invocation
(...) - Click OK
Now use =PO.FRAC.Proppant.Vs.Stokes.SI(...) anywhere in your workbook.