Water 2012, 4(3), 720-738; doi:10.3390/w4030720

An Experimental Investigation on Inclined Negatively Buoyant Jets

1,* email, 1email and 1,2email
Received: 23 July 2012; in revised form: 11 September 2012 / Accepted: 12 September 2012 / Published: 24 September 2012
(This article belongs to the Special Issue Advances in Water Desalination)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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 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.
Keywords: lab-scale experiment; turbulent jet; negative buoyancy; desalination; brine
PDF Full-text Download PDF Full-Text [508 KB, Updated Version, uploaded 25 September 2012 12:21 CEST]
The original version is still available [351 KB, uploaded 25 September 2012 11:44 CEST]

Export to BibTeX |

MDPI and ACS Style

Bashitialshaaer, R.; Larson, M.; Persson, K.M. An Experimental Investigation on Inclined Negatively Buoyant Jets. Water 2012, 4, 720-738.

AMA Style

Bashitialshaaer R, Larson M, Persson KM. An Experimental Investigation on Inclined Negatively Buoyant Jets. Water. 2012; 4(3):720-738.

Chicago/Turabian Style

Bashitialshaaer, Raed; Larson, Magnus; Persson, Kenneth M. 2012. "An Experimental Investigation on Inclined Negatively Buoyant Jets." Water 4, no. 3: 720-738.

Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert