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V.—On the Resistance to Flow of Water through Pipes or Passages having Divergent Boundaries

Published online by Cambridge University Press:  06 July 2012

A. H. Gibson
A. H. Gibson
Affiliation:
University College, Dundee.
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Extract

Some time ago the author published the results of a series of experiments on the flow of water through tubes having uniformly diverging boundaries, in which the loss of energy corresponding to given angles of conicity of the tubes was determined. These pipes, some circular, others square or rectangular in cross section, had the same initial and the same final areas, these being respectively the same as those of circles of 1·5 inch and 3·0 inches diameter, the ratio of initial to final mean velocity of flow being in each case 4 to 1.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 48 , Issue 1 , 1912 , pp. 97 - 116
Copyright
Copyright © Royal Society of Edinburgh 1912

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References

page 97 note * Proc. Roy. Soc., A, vol. lxxxiii., 1910, p. 366Google Scholar.

page 97 note † Ibid., p. 368.

page 100 note * Brightmore, , Proc. Inst. Civil Engineers, vol. clxix., 1906–1907, Pt. iii. p. 322Google Scholar. Here the loss of head was 97 5 per cent, of the theoretical for an enlargement of area 1 to 4, and was about 92 per cent, of the theoretical for an enlargement of 1 to 2·25.

page 101 note * Ibid., p. 370.

page 106 note * This statement requires modification in view of considerations outlined at a later stage of the paper.

page 106 note † Ibid., pp. 367, 375, 376.

page 106 note ‡ Not 20° as stated in the former paper.