# rotational flow

## rotational flow

[rō′tā·shən·əl ′flō]
(fluid mechanics)
Flow of a fluid in which the curl of the fluid velocity is not zero, so that each minute particle of fluid rotates about its own axis. Also known as rotational motion.
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and Greg Campbell of Castle Research Associates, "An Engineering Approach to the Correction of Rotational Flow Calculations for Single Screw Extruders," shows the effect of the shape factor for polymers with various power-law coefficients (Fig.
The absolute flow angles ([alpha]) will approximately match the blade angles of the stationary nozzle and stator blades, while the rotational flow angles ([beta]) will approximately match the blade angles of the rotational rotor blades, as demonstrated in Figures 3 and 4.
Cavex CVX hydrocyclones are designed to withstand severe abrasion caused by the rotational flow of solids and slurry.
The rotational flow field in a channel of constant cross-section with a lateral burning surface is given as follows 17]:
Exact solutions for the rotational flow of generalized Maxwell fluids in a circular cylinder, Math.
The specific rotational flow rate for the screw was calculated at 6.4 kg/(h rpm).
The flow parameter has values between rotational flow where [lambda] = -1, simple shear where [lambda] = 0, and planar extensional flow where [lambda] = 1.
The time required for blending is reduced significantly by top-to-bottom flow compared with rotational flow. This angled mixer position is the most effective for mixing and blending applications and should be used in most situations that do not specifically involve drawing material from the surface.
Kamran ,On the unsteady rotational flow of a generalized Maxwell fluid through a circular cylinder, Arch.
The parameter [S.sub.f] ranges from 0 for pure rotational flow to infinite for pure elongational flow (for simple shear flow [S.sub.f] = 1).
It was thought that the rotational flow of the compressed mixture in the discharge screw was being maintained past the end of the screw.
While at low shear rates in the steady rotational flow the concentration dependence of viscosity is in agreement with the trend observed on the tube rheometry, the data at shear rates above 0.2 [s.sup.-1] do not appear to show any strong concentration effects.

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