PIV边界处理技术在离心泵内流测试中的应用改进  

Improvement in Application of Fluid Boundary Process in Centrifugal Pump Inner Flow Measurements Based on PIV Technique

作　　者：唐晓晨[1] 朱智朋 谈明高[2] 吴贤芳[3] 王凯[2] 

机构地区：[1]江苏振华泵业制造有限公司,江苏姜堰225500 [2]江苏大学流体机械工程技术研究中心,江苏镇江212013 [3]江苏大学能源与动力工程学院,江苏镇江212013

出　　处：《水电能源科学》2016年第1期159-162,共4页Water Resources and Power

基　　金：国家自然科学基金项目(51509109);江苏省科技支撑项目(BE2014879);江苏省成果转化项目(BA2015169)

摘　　要：针对离心泵PIV测试在流场边界附近速度测量的不足,提出了一种基于掩模操作的流场边界处理方法。利用PIV测量离心泵在设计工况和非设计工况下叶轮内部的流动,分别使用掩模处理方法和常规PIV测试中等效处理方法处理PIV图像,并对不同方法处理得到的结果进行对比分析。试验结果表明,所提出的掩模处理方法可较好地解决流场边界附近测量问题,在流场边界附近得到直接测量的、真实可靠的速度,较等效处理方法更易捕捉到细微的流动结构。A fluid boundary process method based on masking process is presented.This method can improve the insufficiency of particle image velocimetry（PIV）measurement near the fluid boundary in centrifugal pump.The flow in the impeller at design and off-design flow rates is measured by PIV.The equivalent method regularly used in PIV measurement and the masking method are adopted to deal with the PIV image,respectively.The results of both methods are analyzed and compared in detail.The PIV experimental results show that the velocity measurement near the fluid boundary can be properly solved by the masking method,and the velocity near the fluid boundary could be measured directly and reliably.Compared with the equivalent method,the detailed structure of the flow can be captured more easily by the masking method.

关 键 词：低比速离心泵 粒子图像测速技术 流场边界处理 掩模处理 等效处理 

分 类 号：TH311[机械工程—机械制造及自动化]