摘要
本文放弃涡粘性假设，采用由雷诺应力输运方程简化而得的雷诺应力显式表达式及ｕｉＴ＇的表达式为补充关系式，构造了适用于热水的二维各向异性ｋ－ε模型，并首次预报了热水岸边排放３个涡的回流区流场结构，与实验结果相符；同时计算了湍动能分布、雷诺剪应力分布和温度分布。
In this paper the eddy viscosity hypothesis is abandoned, and explicit expressions for the Reybolds stress and u T'are obtained through simplification of their respective transport equations. The explicit expressions thus derived are employed as supplementary relations in a 2 -D anisotropic k-ε model for the flow and temperature fieldes. By use of this turbulent mathematical model, we have simulated a recirculating area with three vortexes in side discharge into open channel flow. The flow field results are in good accord with experimental data. We also find reasonable agreement with experimental measurements of turbulent kinetic energy;Reynold's shear stress, and tenmperature field.
出处
《水利学报》
EI
CSCD
北大核心
1994年第5期63-70,76,共9页
Journal of Hydraulic Engineering
基金
青年科学基金
关键词
湍流
热水
岸边排放
数值模拟
reynolds atress
anistropic k-ε model
side discharge.
