水资源与水工程学报2017，Vol.28Issue(5)：168-173,6.DOI:10.11705/j.issn.1672-643X.2017.05.28
横流环境中两孔热水浮射流数值模拟研究
Study on numerical simulation of two-nozzle thermal buoyant jet in cross-flow environment
摘要
Abstract
In order to quick dilute the thermal waste water,the Realizable k-ε turbulence model of Flu-ent and SIMPLE Consistent method are utilized to investigate the effect of spacing of nozzles and initial velocity of thermal buoyant jet on flow and temperature fields.The research indicates that as the spacing of nozzles increases,the effect of the first jet on the second one gradually decreases,and blending degree of second one increases.The reverse vortex pair generated by the jet and cross flows enlarges the mixing degree of thermal waste water and environmental fluid and the distribution of temperature field of cross section is the same as the shape of kidney.As the initial velocity increases,the decay rate of axis temper-ature of the first and second jet increases on the condition of same spacing of nozzles.Additionally, the variations of spacing of nozzles has little impact on the dilution degree of axis temperature for the first jet but has sophisticated influence on the second one on the condition of same initial velocity.The conclusion can be drawn that when S/D =2 and the initial velocity increased,we get the optimal solution for quick dilution of thermal waste water in this research.关键词
热水浮射流/稀释度/流场/温度场/射流孔间距/横向有效流速/横流环境/热废水排放Key words
thermal buoyant jet/dilution degree/flow field/temperature field/spacing of nozzles/ef-fective cross-flow velocity/cross-flow environment/thermal wasterwater discharge分类
建筑与水利引用本文复制引用
陈军,王颖,孙佳乐..横流环境中两孔热水浮射流数值模拟研究[J].水资源与水工程学报,2017,28(5):168-173,6.基金项目
陕西省水利科技计划项目(2015slkj-03) （2015slkj-03）
