Buoyant Jets in Density‐Stratified Crossflow
Publication: Journal of Hydraulic Engineering
Volume 110, Issue 5
Abstract
Analysis is performed to predict the maximum and equilibrium heights‐of‐rise for vertical round jets discharged into a linearly stratified crossflow. Approximate relations for minimum dilution at the maximum height of rise is also presented. Length scales describing the interaction of a buoyant jet with the crossflow and stratification are presented. Various asymptotic solutions can be developed with the use of dimensional analysis and physical reasoning; their applicability depends upon the relative magnitudes of the different length scales. Experimental results were obtained to determine the values of the appropriate coefficients in the various asymptotic solutions. These were obtained by towing a buoyant jet discharge at constant velocity through a stagnant, stratified fluid. Measurements of maximum and equilibrium rise heights were obtained along with concentration profiles at the maximum height‐of‐rise. The results indicate that the approximate solutions can be applied if the coefficients in the various expressions are allowed to vary; this variation may be small enough to neglect for many practical applications.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Briggs, G. A., “Plume Rise,” U.S. Atomic Energy Commission, Division of Technical Information, Oak Ridge, Tenn., 1969.
2.
Bringfelt, B., “Plume Rise Measurements at Industrial Chimneys,” Atmospheric Environment, Vol. 2, 1968, pp. 575–598.
3.
Cederwall, K., “Buoyant Slot Jets into Stagnant or Flowing Environments,” W. M. Keck Laboratory of Hydraulics and Water Resources, Report No. KH‐R‐25, California Institute of Technology, Pasadena, Calif., 1971.
4.
Fay, J. A., Escudier, M., and Hoult, D. P., “A Correlation of Field Observations of Plume Rise,” Journal of Air Pollution Control Association, Vol. 20, No. 6, 1970, pp. 391–397.
5.
Hewett, T. A., Fay, J. A., and Hoult, D. P., “Laboratory Experiments of Smokestack Plumes in a Stable Atmosphere,” Atmospheric Environment, Vol. 5, 1971, pp. 767–789.
6.
List, E. J., and Imberger, J., “Turbulent Entrainment in Buoyant Jets and Plumes,” Journal of the Hydraulics Division, ASCE, Vol. 99, No. HY9, 1973, pp. 1461–1474.
7.
Morton, B. R., Taylor, G. I., and Turner, J. S., “Turbulent Gravitational Convection from Maintained and Instantaneous Sources,” Proceedings of the Royal Society of London, Vol. A234, 1956, pp. 1–23.
8.
Morton, B. R., “Forced Plumes,” Journal of Fluid Mechanics, Vol. 5, 1959, pp. 151–163.
9.
Schwartz, J., and Tulin, M. P., “On the Mean Path of Buoyant Bent‐Over Chimney Plumes,” Atmospheric Environment, Vol. 6, 1972, pp. 19–36.
10.
Scorer, R. S., “The Behavior of Chimney Plumes,” International Journal of Air Pollution, Vol. 1, 1959, pp. 198–220.
11.
Slawson, P. R., and Csanady, G. T., “The Effect of Atmospheric Conditions on Plume Rise,” Journal of Fluid Mechanics, Vol. 47, No. 1, pp. 33–49.
12.
Tennessee Valley Authority, “Full Scale Study of Plume Rise at Large Electric Generating Stations,” TV A, Knoxville, Tenn., 1968.
13.
Wright, S. J., “Mean Behavior of Buoyant Jets in a Crossflow,” Journal of the Hydraulics Division, ASCE, Vol. 103, No. HY5, 1977, pp. 499–513.
14.
Wright, S. J., “Effect of Ambient Crossflows and Density Stratification on the Characteristic Behavior of Round Turbulent Buoyant Jets,” Report No. KH‐R‐36, W. M. Keck Laboratory of Hydraulics and Water Resources, California Institute of Technology, Pasadena, Calif., 1977.
Information & Authors
Information
Published In
Copyright
Copyright © 1984 ASCE.
History
Published online: May 1, 1984
Published in print: May 1984
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.