摘要
在PIV相关法中,所求得的速度矢量不可避免地产生错误矢量。错误矢量产生的原因很多,其中,搜索域的相关系数分布图的“多峰状态”是出现错误矢量的根源所在,而通过确定最佳相关域的范围可以有效地识别错误矢量,这一结论在对水泵水轮机流动图像的解析中得以验证。
In PIV correlation method, the produced erroneous velocity vector in obtained velocity vector is inevitable. There are many causes producing erroneous vector, among them, multi-peak state correlation coefficient distribution chart of searching region is the origin of producing erroneous vector, The determination of range for optimal correlation region can distinguish the erroneous vector, this conclusion can be verified in the flow image of pump turbine
出处
《东北水利水电》
2004年第9期8-10,共3页
Water Resources & Hydropower of Northeast China
