摘要
研究不对称工况的参数有助于理解和消除平行通道管间脉动,提高系统的稳定性。在热工实验回路上,采用两根平行的圆管进行了不对称节流与不对称加热对管间脉动特性影响的实验研究。结果表明,随着进口节流不对称度增加,界限热功率增加,对脉动周期影响不大,脉动振幅存在非单值性变化;随着加热不对称度增加,界限热功率降低,对脉动周期影响不大,脉动振幅增大。通过整理分析,得到了不对称工况参数下的管间脉动界限判定公式。
The research of dissymmetric parameters are very useful to understand and eliminate the instability in parallel channels, and improve the stability of system. The experiment has been done in the thermohydraulics loop by double parallel round channels. With the inlet throttling or the degree of dissymmetry throttling increasing, the critical heating power of oscillation is increased, but the period of oscillation is not affected, and nonlinear effects of amplitude of oscillation are observed experimentally. With the dissymmetry degree of heated power increasing, the critical heating power of oscillation is reduced, but the period of oscillation is not affected, and the amplitude of oscillation is increased. The stability boundary of oscillation in double parallel channels has been finished, and the experimental correlation is obtained.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2006年第6期18-22,共5页
Nuclear Power Engineering
基金
空泡物理和自然循环国家级重点实验室2003
2004年基金资助(No.51482050103ZS8603
51482050204ZS8601)
关键词
不对称加热
不对称节流
管间脉动
热工水力
Dissymmetry heat, Dissymmetry throttling, Oscillation in parallel channels, Thermohydraulics
