摘要
介绍了渡越时间相关测量方法的基本原理与测试系统组成。针对反应堆堆内流体测量的特点,采用热元件作为传感器,进行了用相关法测量空气与水流速的试验研究,并分析了热电偶的响应时间和间距、信号滤波以及分析时间等参数对测量精度的影响,在层流及紊流区稳态流动的水与空气中,试验结果比较满意。
In this paper,the principle of transit time correlation method and the constitution of mea- surement system are presented.Experiments,in which tbermoelements are taken as sensors,are carried out to measure the velocity of flow of air and water in accordance with the characteristics of in-core fluid measurement,by using cross correlation method.The influence of response time;the distance between thermoelements;singnal filtering;and analysis time on measuring ac- curacy is discussed.The results of experiments on air and water in the state of laminited and tur- bulent flow are satisfactory.
出处
《核科学与工程》
CAS
CSCD
北大核心
1993年第4期322-329,6,共8页
Nuclear Science and Engineering
关键词
渡越时间相关
流动速度
测量
模拟
transit time correlation
flow velocity measurement in-core
temperature fluctuation
