摘要
在PIV相关法中,分析结果中存在一些错误矢量。计算分析表明,搜索域的相关系数分布图中出现“多峰状态”是出现错误速度矢量的根本原因。由此,通过确定最佳相关域的范围来识别错误矢量的方法,用综合评价系数对这种方法进行评价,用这种方法对水泵水轮机内部流动的矢量图进行处理,效果较好。
In PIV correlation method, there are erroneous vectors in calculating result. The calculating analysis indicats that many peaks in the discribution map of correlation coefficient for scouting limits are the fundamental cause of erroneous velocity vector. The erroneous vector is discriminated by the determination of optimal correlation limits, this method is evaluated by comprehensive evaluation coefficient. The effect of flow vector map in pump turbine treated by this method is good.
出处
《东北水利水电》
2004年第11期9-10,13,共3页
Water Resources & Hydropower of Northeast China
关键词
PIV相关法
错误速度矢量
识别与评价
PIV correlation method
erroneous velocity vector
discrimination and evaluation
