摘要
采用标准k ε模型,通过数值计算考察了两种沟槽面管道湍流减阻性能,包括不同的沟槽深度、沟槽间距以及零压梯度和逆压梯度的阻力性能,获得最大11%的减阻效果,并对其进行了实验验证;探讨了沟槽面的减阻机理,分析结果与沟槽面平板湍流减阻的结果较一致。
Characteristics of turbulent drag redution over two ribelt surfaces of tubes are numerically studied using the standard k-ε turbulence model, include different ribelt depth, space and pressure gradient. The efficiency of drag reduction about 11% has been gotten. The mechanism of turbulent drag reduction is investigated. The results of analysis are in accord with the turbulent drag reduction over ribelt flow over flat plate.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2005年第1期101-105,共5页
Chinese Journal of Hydrodynamics
基金
国家重点基础研究发展规划973项目(G20000263)
关键词
数值模拟
沟槽面
减阻
numerical simulation
ribelt surfaces
drag reduction
