流动环境中热水负浮力射流的近区数值模拟  

The near-field numerical simulation of heated water jets with negative buoyant in flowing ambient

作　　者：槐文信[1] 杨中华[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《华中科技大学学报（自然科学版）》2006年第2期55-57,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50279037);武汉大学水资源与水电工程科学国家重点实验室开放基金资助项目(2005C011)

摘　　要：在试验研究的基础上,应用基于RNG方法的考虑负浮力的作用的kε-湍流模型,,对流动环境中由于温差引起的平面热水负浮力射流进行数值模拟.计算采用了混合有限分析方法离散控制方程,物理变量采用交错网格布置,用SIMPLEC算法求解离散方程.计算得到的流速场、温度场与试验结果符合良好,表明该模型和方法可用于平面热水负浮力射流特性的预报.On the basis of the experiment study, the RNG k-ε turbulence model was applied to simulate planar heated water negative buoyant jets in flowing ambient. The influence of the negative buoyancy was considered in the model. The control equation was discredited by the Hybrid Finite Analytic Method with the physical parameters arranged on a staggered grid. The diseretized equations were solved by SIMPLEC method. The computed results showed that the flow velocity field and temperature field were in agreement with the experimental data. The model and the presented method can be used to simulate the behavior of the flow.

关 键 词：平面负浮力射流 热水排放 数值模拟 混合有限分析法 

分 类 号：O358[理学—流体力学]