电解制氧槽试件微柱群单相流场PIV测试  

Experimental study on single-phase flow field of micro-square cylinder group in oxygen generation sample by PIV technique

作　　者：李林林[1] 张吉礼[2] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]大连理工大学土木水利学院,辽宁大连116024

出　　处：《哈尔滨工业大学学报》2008年第8期1222-1226,共5页Journal of Harbin Institute of Technology

摘　　要：安全稳定的电解水制氧装置是中长期载人航天的重要保证,为保证固体聚合物电解池(SPE)电解质的安全工作温度,利用激光粒子图像速度场测量(PIV)系统对电解制氧槽试件微小方柱群流场进行试验研究,设计电解槽试件及其流量流场控制测试系统,讨论试件流场PIV测试方法及试验参数设置,得到不同流量下微小尺寸方柱群流道内流速的矢量图.结果表明:试件内流场流速很低,各流量下柱群区的流速量级为10-3m/s,柱群区以纵向流动为主,该结构各流道中流量分配不均,试件内流场分布的不均匀性随流量增加而加剧.改进试件内部水进入流道的入口形式及各横向流道的入口形式,并适当增加周边沟槽流道的阻力,可增加试件内流场分配的均匀性.To ensure the safe working temperature of SPE, the flow field of micro-square cylinder group in oxygen generation sample had been measured experimentally by PIV technique. The oxygen generation sample for experiment and the flow control system were designed ; the operating principle of PIV apparatus was discussed ; velocity vectors with various flows were obtained by measuring the sample with PIV. The experimental results show that the velocity magnitude is 10^-3 m/s; the flow fields of variable flow rates distribute non -uniformly, and longitudinal flow is the main flow; the non-uniform distribution of the flow fields increases with the increase of the flow. To make water distribution more uniform, the inlet structure of the electrolysis oxygen generation and each cross channel should be improved, and the hydraulic resistance of the circle channel should be increased.

关 键 词：电解制氧槽 微小尺寸方柱群 PIV 流场测试 

分 类 号：TB126[理学—工程力学]