Calculation of natural circulation under heaving motion  

作　　者：FENG BeiBei YANG XingTuan JIANG ShengYao 

机构地区：[1]Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education,Institute of Nuclear and New Energy Technology,Tsinghua University

出　　处：《Science China(Technological Sciences)》2014年第8期1658-1669,共12页中国科学（技术科学英文版）

基　　金：supported by the National Science and Technology Major Project(Grant No.ZX06901);the National Natural Science Foundation of China(Grant No.11072131)

摘　　要：Wide validation of self-developed program of natural circulation under oceanic conditions has been conducted compared with experimental data of inclination,zero-power condition and hot-state condition.Experiments were performed on a full-scale,whole parameterization natural circulation loop designed with reference to 5 MW experimental low temperature nuclear heating reactor(NHR)of Tsinghua University.Investigation of natural circulation and parameter effect under heaving motion was carried out using the program and comparison of heaving,inclination and rolling on natural circulation respectively to reveal the influence mechanism.Results indicate that:(1)significant influence of heaving motion on natural circulation was observed,and heaving motion with high level of strength and long cycle would lead to severe flow fluctuation;(2)slight effect was caused by short cycle heaving motion which was completely different from long cycle heaving motion;(3)comprehensive action of alternating force and flow density distribution would result in natural circulation under heaving motion;(4)most severe accidents maybe result from the long cycle heaving motion rather than inclination and rolling motion.Investigation of influence of heaving motion on natural circulation could have important reference significance in the optimization design of nuclear reactors.

关 键 词：natural circulation oceanic condition NHR nuclear engineering 

分 类 号：TL411[核科学技术—核技术及应用]