By scale-up, one means the prediction of pressure drop in large industrial or commercial pipelines, or other flow situations, based on results from laboratory-scale small pipe facilities. Scale-up for the use of non-Newtonian fluids or drag-reducing solutions in long-distance oil pipelines, central-station heating or cooling schemes, or application to ship design, are important current interests. A simple analytical approach has been developed which provides excellent scaling over a wide range of pipe sizes for both water-based and oil-based polymer solutions. Examples are given which show close comparisons of scaling from small pipes to actual test data from much larger diameter industrial-scale facilities.
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