边壁凹凸隧洞水流的数值模拟  

Numerical Simulation of Tunnel Flow with a Concave-Convex Boundary

作　　者：尹则高[1] 拾兵[1] 张土乔[2] 孙东坡[3] 

机构地区：[1]中国海洋大学工程学院,山东青岛266100 [2]浙江大学建筑工程学院,浙江杭州310027 [3]华北水利水电学院水利工程系,河南郑州450008

出　　处：《中国海洋大学学报（自然科学版）》2008年第1期143-146,共4页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(50479029)资助

摘　　要：利用RNGκ-ε数学模型,对长方体和半球体边壁凹凸的隧洞水流流速、压力、水头损失进行计算,并对凹凸体长度分别沿纵向、横向、垂向变化引起的水头损失规律进行了分析。结果表明,无论是长方体还是半球体,外凸体产生的水头损失系数都小于大小相等、方向一致的内凸体水头损失系数。内凸长方体水头损失系数对垂直水流方向的横向、垂向特征长度变化较为敏感,而顺水流方向纵向特征长度的变化对其影响不大。For flow through a tunnel with a concave-convex boundary, the RNG κ-ε mathematical model was adopted to calculate the velocity and pressure tieeds and head loss under different conditions. The computated head loss caused by concave-convex bodies of different dimensionsand shapes was analyzed. The resuets showed that the head loss.arising from the convexes was much less than that arising from the concaves, while their sizes and orientations were the same. The head loss arising from the concaves varying in the transverse or vertical direction was influenced much more than those varying in the longitudinal direction.

关 键 词：RNG κ-ε数学模型 数值模拟 凹凸体 水头损失 

分 类 号：TV135.2[水利工程—水力学及河流动力学]