IMECH-IR  > 非线性力学国家重点实验室
沟槽壁面湍流边界层减阻的TR-PIV测量
杨绍琼; 李山; 田海平; 李一凡; 王清毅; 姜楠
Source Publication第七届全国流体力学学术会议论文摘要集
2012
Pages117-117
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TR-PIV技术对沟槽壁面湍流边界层的速度矢量时间序列及各阶统计量进行了实验测量研究。在来流速度分别为0.13m/s,0.19m/s时,通过与同材料等厚有机玻璃平板的对比,沟槽壁面实现了近6%~11%的摩阻减小。讨论了在同一来流速度下相同测量区域内沟槽面对湍流边界层时均速度剖面、雷诺应力各分量及湍流强度等特征参数的影响,对比总结了沟槽面湍流边界层内偏斜因子和平坦因子的分布规律。结果表明,沟槽面增加了湍流边界层缓冲层的厚度,且沟槽面基于摩擦速度的无量纲时均速度在缓冲层明显大于相同流场条件下平板边界层对应位置的时均速度,而在对数律区趋于一致,但外区略有不同。沟槽面湍流边界层沿流向平均相对湍...
Keyword湍流边界层 沟槽壁面 减阻 Tr-piv 统计特征量
Departmentf
Language中文
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48612
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
杨绍琼,李山,田海平,等. 沟槽壁面湍流边界层减阻的TR-PIV测量[C]第七届全国流体力学学术会议论文摘要集,2012:117-117.
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