超临界二氧化碳细管喷放临界流特性研究  

Investigations on Supercritical CO Critical Flow through Mini Tubes

作　　者：王俊峰[1] 汪杨乐 周源 黄彦平[1] Wang Junfeng;Wang Yangle;Zhou Yuan;Huang Yanping(CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology,Nuclear Power Institute of China,Chengdu,610213,China;College of Physisc,Sichuan University,Chengdu,610065,China)

机构地区：[1]中国核动力研究设计院中核核反应堆热工水力技术重点实验室,成都610213 [2]四川大学核工程与核技术学院,成都610065

出　　处：《核动力工程》2021年第2期35-38,共4页Nuclear Power Engineering

基　　金：国家自然科学基金(11605193,U1867218)。

摘　　要：以处于超临界状态的二氧化碳为工质,开展了泄压喷放及临界流实验研究,获得了上游滞止参数、喷管长径比对临界流量影响的实验数据和趋势规律,基于实验数据提出了超临界二氧化碳临界流量预测关系式,并进一步利用公开文献中其他研究人员的实验数据对关系式进行了评价,预测值与实验结果偏差在±15%以内,表明本文提出的预测关系式能对超临界二氧化碳临界流量进行较好预测。In this paper, an experimental supercritical CO2 critical flow investigation was carried out. The effect of upstream stagnation parameters and length to diameter ratio on the critical flow rate was obtained. A prediction correlation of mass flow rate equation was proposed based on the experimental data. The comparisons of correlation prediction and experimental data from open literature show good agreement. The deviation is within the boundary of ±15%. It shows that the present correlation can predict the supercritical CO2 critical flow rate.

关 键 词：超临界二氧化碳 临界流 预测关系式 

分 类 号：TL339[核科学技术—核技术及应用]