摘要
采用Ｋ－ε紊流模型对环境水力学中目前研究尚少的横流中底部排污问题进行了数值模拟．用有限分析法给出了正常网格求解原参数的速度、压力迭代格式．静止环境中自由射流和横流中垂直射流的计算结果与实验资料吻合较好．本文首次对横流中不同射流动量比的垂直、倾斜和水平底部排污混合区进行了较全面地、系统地数值计算和分析，给出了不同工况的速度、浓度分布特性和经验公式．
The K-ε turbulent model is adopted to simulate the bottom drainage effluent in across flow, which is seldom studied in environment hydraulics. A new iteration method isgiven to solve the velocity and pressure of original parameters by using finite analytic methodin regular grid. The computational results of free jet in stationary environment and verticaljet in cross flow are in good agreement with the experimental data. The calculation andanalysis are also conducted for the mixing region of horizontal jet, inclined jet and vertical jetat the bottom of a cross flow and finally, the character and empirical formulas of velocity andconcentration distribution are presented.
出处
《武汉水利电力大学学报》
CSCD
1995年第2期149-155,共7页
Engineering Journal of Wuhan University
关键词
紊流
横向流动
浮力效应
有限分析法
污水
turbulence jets
finite analytic method
transverse flow
buoyancy effect
