摘要
采用作者给出的三维紊流模型，结合混合有限分析法及交错网格对浅水型河道中扩散器垂向排放的流动进行了数值计算。重点对该类流动的两个流动特征进行了分析：一是水面的隆起高度，二是在横流情况下的流动转变条件。进而给出了这类排放水面的最小稀释度。这些特征的探讨对废水排入江河的水力设计有重要的参考意义。
A three dimensional mathematical model for calculating the steady flow of multiple non buoyant turbulent jets in a cross flowing is present in this paper.For closing the control equation,the k ε turbulence model is used in the mathematical model.The wall function method is employed to treat the wall boundary condition at the bottom plane.The closed control equations are discretized by using hybrid finite analytic method on a non uniform staggered grid system.The two characteristics for this kind flow are present:one is maximum surface elevation,an other is the condition for transform of flow type.The minimum dilution of water surface is given also.The results are reasonable and useful to design for waste water discharging into river.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
1999年第1期1-6,共6页
Advances in Water Science
基金
武汉市青年科技晨光计划资助
关键词
表面稀释度
扩散器
浅水
河道
数值模拟
surface dilution
diffuser
shallow water
channel
numerical simulation
transform of flow type.
