Abstract
An equation derived from Virk's universal drag reduction relation has been shown to adequately describe the drag reduction of aqueous solutions of polyethylene oxide condensates over a wide range of molecular weight and concentration. Virk's intrinsic concentration was found to be an inverse function of polymer molecular weight. The limit of usefulness of polymer critical concentration as a normalizing aid in the treatment of drag reduction is indicated and the polymer aggregation hypothesis for drag reduction is briefly discussed.
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