水资源与水工程学报2016，Vol.27Issue(1)：147-151,157,6.DOI:10.11705/j.issn.1672-643X.2016.01.26
浅尾水深水平底板上表面射流水力特性的数值模拟研究
Numerical simulation of hydraulic characteristics of surface jet on horizontal base plate with shallow depth
摘要
Abstract
The VOF (volume of fluid) method was applied to track free water surface,and the Realizable turbulent model was used to close the two-phase flow time-averaged equation to numerically simulate the hydraulic characteristics of surface jet on horizontal base plate with shallow depth.The finite volume method was used to discretize the differential equation,and the coupling velocity and pressure equations were solved with the pressure-implicit method of splitting operators (PISO) algorithm.The influence of inlet velocity,depth of shallow tail and width of nozzle on the characteristics of streamline distribution,velocity field and the variation of the maximum velocity on a cross-section along the flowing direction was studied and analyzed.The result showed that a big vortex exists in the flow field,and the greater the inlet flow velocity,the longer the length of vortex.The distribution laws of horizontal velocity and longitudinal velocity of a cross section are different in the backflow region and open channel flow region.The gradient decaying of the maximum velocity on cross-section was mainly affected by the inlet velocity.关键词
水平底板/浅尾水深/壁面射流/湍流/数值模拟Key words
horizontal base bed/shallow depth/wall jet/turbulent flow/numerical simulation分类
建筑与水利引用本文复制引用
郑艳,魏文礼,洪云飞,刘玉玲..浅尾水深水平底板上表面射流水力特性的数值模拟研究[J].水资源与水工程学报,2016,27(1):147-151,157,6.基金项目
国家自然科学基金项目(51578452、51178391) （51578452、51178391）
中央财政支持地方高校发展专项资金特色重点学科项目(106-00X101) （106-00X101）
