Abstract
THE addition of small amounts of certain materials to fluids undergoing turbulent flow causes a reduction on pressure drop called drag reduction. Polymer solutions, soap solutions, and solid suspensions in liquids and gases have all demonstrated this phenomenon1.
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ZAKIN, J., CHIANG, J. Non-ionic Surfactants as Drag Reducing Additives. Nature Physical Science 239, 26–28 (1972). https://doi.org/10.1038/physci239026a0
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DOI: https://doi.org/10.1038/physci239026a0
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