Modeling the buoyant flow of heated water discharged from surface and submerged side outfalls in shallow and deep water with a cross flow SCIE SCOPUS

Cited 22 time in WEB OF SCIENCE Cited 27 time in Scopus
Title
Modeling the buoyant flow of heated water discharged from surface and submerged side outfalls in shallow and deep water with a cross flow
Author(s)
Kim, Dae Geun; Cho, Hong Yeun
KIOST Author(s)
Cho, Hong Yeon(조홍연)
Publication Year
2006-12
Abstract
In this study, a three-dimensional model was used to numerically study the buoyant flow, along with its mixing characteristics, of heated water discharged from the surface and submerged side outfalls in shallow and deep water with a cross flow. Hydraulic experimental data were used to evaluate the applicability of the model. The simulation results agree well with the experimental results, particularly, the jet trajectories, the dimensions of the recirculating zone, and the distribution of the dimensionless excess temperature. The level of accuracy of the simulation results of the present study is nearly identical to that of the results conducted by McGuirk and Rodi (1978). If the heated water is discharged into shallow water where the momentum flux ratio and the discharge densimetric Froude number are high, the submerged discharge method is better than the surface discharge method in terms of the scale of the recirculating zone and the minimum dilution. In deep water, where the momentum flux ratio and discharge densimetric Froude number are low, however, the submerged discharge method had few advantages. In shallow water, the discharge jet is deflected by the ambient cross flow, while forcing the ambient flow to bend towards the far bank for the full depth. For a submerged discharge in shallow water, the recirculating zone is the largest in the lowest layer but becomes smaller in the upper layer. As the water depth increases, the ambient flow goes over the jet and diminishes the blocking effect, thereby decreasing the bending of the jet.
ISSN
1567-7419
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4814
DOI
10.1007/s10652-006-9006-3
Bibliographic Citation
ENVIRONMENTAL FLUID MECHANICS, v.6, no.6, pp.501 - 518, 2006
Publisher
SPRINGER
Subject
JETS
Keywords
buoyant flow; heated water; densimetric Froude number; surface discharge; submerged discharge
Type
Article
Language
English
Document Type
Article
Publisher
SPRINGER
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse