摘要
应用作者所取的扩散器在宽浅江河中排放的流场和浓度场的数值模拟及试验研究成果,对扩散器排放近区的特性进行预报.分析近区流场和浓度场的特征,得出了下游近区中线流速、浓度和稀释度的沿程变化规律,收缩断面变化范围,以及主流核和高浓度区的长度,也得出了流速和浓度在横断面上的分布状态,并分析和讨论了相对动量、相对扩散器长度对这些特性的影响.
The mathematical model,calculational method and laboratory experiments are used to predict the characteristics of river diffusers.The developments of the centerline velocity,concentration and dilution are calculated.The scope of contracted section,the length of the main current core,the transverse velocity and concentration are given.The kinetic energy of discharge and the length of multiport diffuser are found to have strong influence on the characteristics of river multiport diffuser.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1993年第4期81-87,共7页
Journal of Hohai University(Natural Sciences)
关键词
扩散器
河道
污水
预测
diffuser
contracted section
ZFE
dilution
