Orifice Plate Calibration in a Dilute Polymer Solution


THERE have been several experiments in which the turbulent skin friction in pipe flow is reduced by adding certain soluble macromolecular polymers to a flowing solvent. The polymers do not seem to affect the turbulence in the core of the flow1, but rather cause a thickening of the viscous sublayer2. Drag reduction, it seems, requires the presence of a wall.

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    Wells, C. S., and Spangler, J. G., NASA Rep. No. NASA CR-852 (1967).

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    Elata, C., Lehrer, J., and Kahanovitz, A., Israel J. Tech., 4, 87 (1966).

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    Gadd, G. E., Nature, 206, 463 (1965).

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    Gadd, G. E., Nature, 212, 874 (1966).

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    Jackley, D. N., Intern. Shipbuild. Prog., 14, No. 152 (1967).

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BATE, H. Orifice Plate Calibration in a Dilute Polymer Solution. Nature 216, 1100–1101 (1967). https://doi.org/10.1038/2161100a0

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