Observations of Confined Spray-Driven Air Vortices

A series of experiments was conducted in a right circular cylinder to determine the flow pattern that develops when air circulates from the drag induced by falling water sprays. Two different flow patterns were visually observed and recorded by the distribution of spray mass flux. In one pattern, th...

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Bibliographic Details
Published in:Nuclear science and engineering 2002-10, Vol.142 (2), p.237-243
Main Author: Stamps, Douglas W.
Format: Article
Language:English
Subjects:
AIR
Applied sciences
CONTAINERS
CYLINDERS
DISTRIBUTION
DRAG
Energy
Energy. Thermal use of fuels
ENGINEERING
Exact sciences and technology
Fission nuclear power plants
Installations for energy generation and conversion: thermal and electrical energy
NOZZLES
SPRAYS
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS
VORTICES
WATER
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Summary:A series of experiments was conducted in a right circular cylinder to determine the flow pattern that develops when air circulates from the drag induced by falling water sprays. Two different flow patterns were visually observed and recorded by the distribution of spray mass flux. In one pattern, the airflow took the form of a single three-dimensional toroidal vortex with the air flowing up the sides of the container and down the center thereby concentrating the water sprays in the center of the container. The toroidal vortex was an unstable flow pattern unless the water spray was uniformly distributed along the ceiling. The second pattern was stable and took the form of a single nearly two-dimensional stationary roll with the air flowing up one side of the container and down the other thereby concentrating the water sprays along the downflow side. As the water pressure in the nozzles was increased, the roll did not remain stationary but rotated slowly about the central vertical axis of the container.
ISSN:0029-5639
1943-748X
DOI:10.13182/NSE02-A2304