Mixing Design Tool
Tank volume
gallon
Fluid specific gravity
Fluid viscosity
cP
Impeller type
Number of impellers
Impeller diameter
inch
Mixer shaft speed
RPM
Calculate
Results
Reynolds number
Laminar flow: Re < 100; Transition flow: 100 < Re < 10000; Turbulent flow: Re > 10000
Impeller Pumping Rate
The flowrate in the tank cross section that passes through the impeller. It gives a general idea how much flow the impeller will induce
Bulk Fluid Velocity
Velocity is obtained by dividing the pumping flowrate with the cross section area of the tank. It gives a rough idea what flow velocity is. Note the difference between bulk velocity and tip speed: tip speed is the tangential speed due to impeller rotation, while bulk velocity is more axial flow velocity that indicates overall flow circulation in the tank.
Mixing scale
Is an important output, with 1 being mild, 3 normal, 6 vigorous, and 10 being violent mixing.
Tank turnovers per minute
Indicates how many tank volumes are turned every minute. This is obtained by Pumping rate divided by Tank volume. This is an indication of how many "rounds" the whole fluid is circled per unit.
G-value
Value is specific to wastewater treatment, so may be of not much interest to general mixing applications.
Tip speed
Important for operator looking for high shear applications.
Minimum Motor Power