NUMERICAL STUDY ON THE STABILITY AND MIXING OF VERTICAL ROUND BUOYANT JET IN SHALLOW WATER

The k-epsilon model was applied to establish the mathematical model of vertical round buoyant jet discharging into confined depth, and it was solved using the Hybrid Finite Analytic Method (HFAM). The numerical predictions demonstrate two generic flow patterns for different jet discharge and environ...

Full description

Saved in:
Bibliographic Details
Published in:Applied mathematics and mechanics 2005, Vol.26 (1), p.92-100
Main Author: 曾玉红 槐文信
Format: Article
Language:English
Subjects:
圆形浮力射流
数字仿真
混合有限分析法
混合特征
稳定性
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The k-epsilon model was applied to establish the mathematical model of vertical round buoyant jet discharging into confined depth, and it was solved using the Hybrid Finite Analytic Method (HFAM). The numerical predictions demonstrate two generic flow patterns for different jet discharge and environmental parameters:(Ⅰ) a stable buoyant flow discharge with the mixed fluid leaving the near-field warm in a surface warm water layer;(Ⅱ) an unstable buoyant flow discharge with recirculation and re-entrainment of warm water in the near field. Furthermore, the mixing characters of vertical round buoyant jet were numerically predicted. Both the stability criterion and numerical predictions of bulk dilutions are in excellent agreement with Lee and Jirka ' s experiments and theory.
ISSN:0253-4827
1573-2754
DOI:10.1007/bf02438370