Experiments on the flow of swirling water through a pressure nozzle and an open trumpet
- 10 April 1956
- journal article
- Published by The Royal Society in Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
- Vol. 235 (1200) , 78-89
- https://doi.org/10.1098/rspa.1956.0066
Abstract
Marked departures from inviscid flow were found when swirling water was discharged downwards under pressure through a Perspex conical nozzle. A boundary layer of forced vortex motion formed on the free surface of the air core, and in this region the loss of total head was large. These results were confirmed by measurements of the tangential and axial velocities close to the free surface. When the supply pressure was low and the swirl great, the axial velocity was reversed in the upper part of the nozzle close to the forced vortex. Similar effects were found in gravity flow through a vertical trumpet. Moreover, outside the forced vortex above the trumpet, the downward flow under some conditions was concentrated in cylindrical zones of small radial thickness.This publication has 2 references indexed in Scilit:
- Axial Flow in a VortexNature, 1953
- Cyclone Dust Collectors for BoilersTransactions of the American Society of Mechanical Engineers, 1953