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An Experimental Investigation on Inclined Negatively Buoyant Jets

Bashitialshaaer, Raed LU ; Larson, Magnus LU and Persson, Kenneth M LU (2012) In Water 4(3). p.750-768
Abstract
An experimental study was performed to investigate the behavior of inclined negatively buoyant jets. Such jets arise when brine is discharged from desalination plants. A turbulent jet with a specific salinity was discharged through a circular nozzle at an angle

to the horizontal into a tank with fresh water and the spatial evolution of the jet was recorded. Four different initial jet parameters were changed, namely the nozzle diameter, the initial jet inclination, the jet density and the flow rate. Five geometric quantities describing the jet trajectory that are useful in the design of brine discharge systems were determined. Dimensional analysis demonstrated that the geometric jet quantities studied, if

normalized with... (More)
An experimental study was performed to investigate the behavior of inclined negatively buoyant jets. Such jets arise when brine is discharged from desalination plants. A turbulent jet with a specific salinity was discharged through a circular nozzle at an angle

to the horizontal into a tank with fresh water and the spatial evolution of the jet was recorded. Four different initial jet parameters were changed, namely the nozzle diameter, the initial jet inclination, the jet density and the flow rate. Five geometric quantities describing the jet trajectory that are useful in the design of brine discharge systems were determined. Dimensional analysis demonstrated that the geometric jet quantities studied, if

normalized with the jet exit diameter, could be related to the densimetric Froude number.

Analysis of the collected data showed that this was the case for a Froude number less than 100, whereas for larger values of the Froude number the scatter in the data increased significantly. As has been observed in some previous investigations, the slope of the best-fit straight line through the data points was a function of the initial jet angle (θ), where the slope increased with θ for the maximum levels (Ym) studied, but had a more complex behavior for horizontal distances. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
desalination, brine, negative buoyancy, turbulent jet, lab-scale experiment
in
Water
volume
4
issue
3
pages
19 pages
publisher
MDPI Ag
external identifiers
  • WOS:000312255800014
  • Scopus:84878742879
ISSN
2073-4441
DOI
10.3390/w4030720
language
English
LU publication?
yes
id
d66b08d0-0f1b-4aea-b967-9975a18e31af (old id 2064293)
date added to LUP
2011-08-18 13:20:52
date last changed
2016-10-13 05:07:22
@misc{d66b08d0-0f1b-4aea-b967-9975a18e31af,
  abstract     = {An experimental study was performed to investigate the behavior of inclined negatively buoyant jets. Such jets arise when brine is discharged from desalination plants. A turbulent jet with a specific salinity was discharged through a circular nozzle at an angle<br/><br>
to the horizontal into a tank with fresh water and the spatial evolution of the jet was recorded. Four different initial jet parameters were changed, namely the nozzle diameter, the initial jet inclination, the jet density and the flow rate. Five geometric quantities describing the jet trajectory that are useful in the design of brine discharge systems were determined. Dimensional analysis demonstrated that the geometric jet quantities studied, if<br/><br>
normalized with the jet exit diameter, could be related to the densimetric Froude number.<br/><br>
Analysis of the collected data showed that this was the case for a Froude number less than 100, whereas for larger values of the Froude number the scatter in the data increased significantly. As has been observed in some previous investigations, the slope of the best-fit straight line through the data points was a function of the initial jet angle (θ), where the slope increased with θ for the maximum levels (Ym) studied, but had a more complex behavior for horizontal distances.},
  author       = {Bashitialshaaer, Raed and Larson, Magnus and Persson, Kenneth M},
  issn         = {2073-4441},
  keyword      = {desalination,brine,negative buoyancy,turbulent jet,lab-scale experiment},
  language     = {eng},
  number       = {3},
  pages        = {750--768},
  publisher    = {ARRAY(0x8c2cb10)},
  series       = {Water},
  title        = {An Experimental Investigation on Inclined Negatively Buoyant Jets},
  url          = {http://dx.doi.org/10.3390/w4030720},
  volume       = {4},
  year         = {2012},
}