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Numerical solutions of turbulent buoyant jet problems

Fan, Loh-Nien and Brooks, Norman H. (1969) Numerical solutions of turbulent buoyant jet problems. W. M. Keck Laboratory of Hydraulics and Water Resources Report, 18. California Institute of Technology , Pasadena, CA. (Unpublished) http://resolver.caltech.edu/CaltechKHR:KH-R-18

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Abstract

Theoretical solutions were obtained for four classes of turbulent buoyant jet problems, namely, 1) an inclined, round buoyant jet in a stagnant, uniform ambient fluid; 2) an inclined, round buoyant jet in a stagnant ambient fluid with linear density-stratification; 3) an inclined, slot buoyant jet in a stagnant, uniform ambient fluid; 4) an inclined, slot buoyant jet in a stagnant ambient fluid with linear density-stratification. This report is a summary of the numerical simulations on buoyant jets in stagnant environments carried out in connection with previous investigations by Fan (10), Fan and Brooks (12) and Brooks and Koh (8). Using the integral type of analysis, assuming similarity, predictions can be made for jet trajectory, widths, and dilution ratios, in a uniform or density-stratified environment without ambient currents. Numerical solutions have been presented in dimensionless form for a wide range of initial conditions including the effect of the initial angle of discharge. Problems with <u>non</u>-linear density profiles are not readily treated in generalized non-dimensional form. Rather it is more feasible to make case by case calculations using dimensional variables. A program for such calculations for a round jet is available in a technical memorandum by Ditmars (16). These solutions are useful in the design of disposal systems for sewage effluent into the ocean or cooling water into a lake.


Item Type:Report or Paper (Technical Report)
Additional Information:© 1969 W. M. Keck Laboratory of Hydraulics and Water Resources. California Institute of Technology. The authors gratefully acknowledge the helpful suggestions of Dr. Robert C. Y. Koh during the investigation. They are also indebted to Messrs. Carl A . Green, Jr. , William W. Owens, and Edward Thompson for their assistance in preparing graphs and to Mrs. Patricia Rankin for her typing and assembling of this report. This research was supported by research grants WP-00428 and WP-00680 of the U. S. Public Health Service, National Institutes of Health, and research grant WP-01256 of the Federal Water Pollution Control Administration (now renumbered 16000DGY).
Group:W. M. Keck Laboratory of Hydraulics and Water Resources
Funders:
Funding AgencyGrant Number
U.S. Public Health Service (USPHS)WP-00428
U.S. Public Health Service (USPHS)WP-00680
U.S. Public Health Service (USPHS)WP-01256
Federal Water Pollution Control Administration16000DGY
DOI:10.7907/Z9PR7SX8
Record Number:CaltechKHR:KH-R-18
Persistent URL:http://resolver.caltech.edu/CaltechKHR:KH-R-18
Usage Policy:You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.
ID Code:25960
Collection:CaltechKHR
Deposited By: Imported from CaltechKHR
Deposited On:29 Apr 2004
Last Modified:23 Feb 2016 17:32

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