Settling Velocity Calculator
Stokes law only: isolated sphere, low Reynolds number, static Newtonian fluid. It is not a basin design or particle-size distribution prediction. Source: US EPA laboratory manual (EPA 10063): https://www.epa.gov/sites/default/files/2013-12/documents/nwca2011_laboperationsmanual_20120208.pdf
A QUICK WALKTHROUGH
How to use this tool
- Estimate Stokes settling velocity for one ideal spherical particle.
- v = g d² (ρp − ρf) / (18 μ)
- Stokes law only: isolated sphere, low Reynolds number, static Newtonian fluid. It is not a basin design or particle-size distribution prediction. Source: US EPA laboratory manual (EPA 10063): https://www.epa.gov/sites/default/files/2013-12/documents/nwca2011_laboperationsmanual_20120208.pdf
Scope and limitations
Stokes law only: isolated sphere, low Reynolds number, static Newtonian fluid. It is not a basin design or particle-size distribution prediction. Source: US EPA laboratory manual (EPA 10063): https://www.epa.gov/sites/default/files/2013-12/documents/nwca2011_laboperationsmanual_20120208.pdf
Formula
v = g d² (ρp − ρf) / (18 μ)
GOOD TO KNOW
Common questions
Are inputs uploaded?
Calculations stay in this browser.