Abstract
The isotopic approximation, based on a refined radial averaging method, is used to find the optimal counterflow in a centrifuge with a typical flow scheme and radially nonuniform transit flow of arbitrary intensity. The dependences of the concentration gradients in various regions of the flow on the feed parameters are determined. It is shown that in a long rotor with the optimal counterflow the radial concentration gradient in the counterflow region is close to half its equilibrium value and the axial gradient is small compared with the radial gradient. Transit flow nonuniformity decreases the optimal counterflow intensity and decreases the concentration gradients.
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