IMECH-IR  > 非线性力学国家重点实验室
高分子聚合物溶液减阻特性的TR-PIV实验研究
姚世勇; 管新蕾; 姜楠
Source Publication第七届全国流体力学学术会议论文摘要集
2012
Pages125-125
Conference Name第七届全国流体力学学术会议
Conference Date2012-11-12
Conference Place中国广西桂林
Abstract本文利用二维高分辨率TR-PIV对高分子聚合物水溶液减阻性能进行了实验研究。实验测量了水槽中不同雷诺数下充分发展的减阻溶液和清水平板的湍流边界层流场,减阻溶液是质量浓度为190ppm的聚丙乙烯酰胺(PAM)水溶液。研究结果表明,加入高分子聚合物后,壁面摩擦速度减小。随着雷诺数的增大,减阻率变大。减阻溶液的对数律平均速度剖面具有与清水同样的斜率,但减阻溶液的缓冲层增厚,对数层上移,具有明显的减阻特征。随着雷诺数的增大,高分子聚合物水溶液在流向和法向的湍流度以及雷诺剪切应力要比清水的小。相空间象限分裂法分析表明喷射和扫掠事件是主要的雷诺应力贡献者,尤其是喷射事件虽然发生概率小于扫掠事件,但是其贡献...
Keyword湍流边界层 减阻 高分子聚合物 Tr-piv 局部平均速度结构函数
Departmentf
Language中文
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48614
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
姚世勇,管新蕾,姜楠. 高分子聚合物溶液减阻特性的TR-PIV实验研究[C]第七届全国流体力学学术会议论文摘要集,2012:125-125.
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