蒸汽发生器强迫循环流动不稳定性分析  

Analysis of Forced-Convection Flow Instability in Steam Generator

作　　者：吴鸽平[1] 秋穗正[1] 苏光辉[1] 贾斗南[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,710049

出　　处：《核动力工程》2006年第4期16-20,25,共6页Nuclear Power Engineering

摘　　要：介绍了蒸汽发生器强迫循环下稳态和瞬态的计算方法。从基本的守恒方程出发,充分考虑了蒸汽发生器的结构和可能的流动状态以及换热形式,建立了一套完整的数学计算模型。程序采用Gear算法,通过理论计算得到了流动不稳定性脉动曲线和相应的不稳定区域。本文还研究了压力、质量流速、进口过冷度和进、出口节流对不稳定性的影响。A numerical method is developed to predict the steady-state and transient behaviors of forced-convection flow in steam generator. From the basic differential conservation equations, an intact model is constructed fully considering the structure of the steam generator, its possible flow and heat transfer. Gear method is adopted. The curves of flow instabilities and unstable regions are acquired with computation. The effects of pressure, flow flux, inlet subcooling and inlet/outlet throttle on the system behaviour are discussed.

关 键 词：蒸汽发生器 强迫循环 不稳定性 

分 类 号：TL33[核科学技术—核技术及应用]