Abstract
THE temperature profile in an essentially Newtonian liquid in laminar flow in a capillary has been measured experimentally. Previously the phenomenon of capillary heating (that is, heat produced by the internal friction of liquids in flow in a capillary) had been the subject of extensive theoretical treatment1,2; but with little experimental verification. These experiments show that the system is essentially adiabatic, in contradiction to widespread belief that the ‘isothermal wall’ condition existed.
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References
Brinkman, H. C., App. Sci. Res., A, 2, 120 (1951).
Bird, R. B., Soc. Plastics Eng. J., 11, 7 (1955).
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GERRARD, J., APPELDOORN, J. & PHILIPPOFF, W. Heating in Capillary Flow. Nature 194, 1067–1068 (1962). https://doi.org/10.1038/1941067b0
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DOI: https://doi.org/10.1038/1941067b0
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