The Mean Velocity of Discrete Particles in Turbulent Flow in a Pipe
- 1 December 1955
- journal article
- Published by IOP Publishing in Proceedings of the Physical Society. Section B
- Vol. 68 (12) , 1095-1104
- https://doi.org/10.1088/0370-1301/68/12/314
Abstract
The axial component of velocity, averaged over a long time, of a material element of fluid in a straight circular pipe is shown theoretically to be equal to the discharge velocity defined as the discharge, averaged over a long time, divided by the cross section of the pipe. This prediction was confirmed experimentally by injecting in turn into a water pipe a large number of solid spheres of different sizes having the same density as water. A satisfactory theory is developed to allow for the finite size of the spheres. The fluctuation in the time of travel of a particle between two fixed stations is examined, and it is shown how a few particles may be used to determine the discharge velocity within calculable limits of accuracy.Keywords
This publication has 2 references indexed in Scilit:
- The dispersion of matter in turbulent flow through a pipeProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1954
- The Salt Velocity Method of Water MeasurementTransactions of the American Society of Mechanical Engineers, 1923