摘要
粒子图像测速技术(PIV)作为一种全新的无扰、瞬态、全场速度测量方法,已被广泛应用于液体或气体的单相流流速场测定。对于两相流PIV技术,目前还处于起步与发展阶段。本文对近年来两相PIV技术的发展及取得的成就进行了回顾,简要地分析了PIV技术在两相流测量中的潜在优势及存在的困难,着重对目前两相流PIV技术中的关键技术-相分离方法进行了较为详尽的总结与评述,并对PIV技术在分散相颗粒尺寸及浓度测量方面的应用进行了讨论。
As a new method for non intrusive,instantaneous and whole field velocity measurement,particle image velocimetry(PIV)is widely used in single phase water flow as well as in gas flow,but the two phase PIV measurement technique is still in its developing stage.In recent years,many researchers have made great efforts in this field and get some progresses.The principle,superiority,difficulty of PIV used in two phase flow measurement and the recent progress of phase separation methods a key technique in two phase PIV measurement are presented in this paper.The particle size and concentration measurement methods are also discussed in this paper.
出处
《水力发电学报》
EI
CSCD
北大核心
2004年第6期103-107,共5页
Journal of Hydroelectric Engineering
基金
国家自然科学基金项目(50079020)
陕西省教育厅科研计划项目(00JK190)
关键词
多相流体力学
两相流
PIV
相分离方法
粒径分析
浓度测量
multiphase fluid mechanics
two-phase flows
PIV
phase separation
size analysis
concentration measurement
