强迫循环下蒸汽发生器流动不稳定性研究  

Research of flow instability in forced-convection generator

作　　者：吴鸽平[1] 秋穗正[2] 苏光辉[2] 贾斗南[2] 

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,陕西西安710049 [2]西安交通大学核工程与核技术,陕西西安710049

出　　处：《核科学与工程》2006年第3期193-198,共6页Nuclear Science and Engineering

摘　　要：由于两相流不稳定性在实际应用中的重要性,许多学者对其本质进行了大量的研究。本文建立数学模型对强迫循环下蒸汽发生器的流动不稳定性进行了计算。此模型采用均相流假设并认为相间热力学平衡。模型考虑了管壁的蓄热。此模型被用于系统压力、质量流速、进口过冷度、进、出口节流和间隙、不同内、外径之比和内、外管的加热比对不稳定性影响的研究。Because of the importance of two-phase instabilities, substantial efforts have been made to understand the physical phenomena governing such instabilities. The purpose of this paper is to present a numerical model for the analysis of flow-induced instabilities in forced-convection steam generator. The model is based on the assumption of homogenous two-phase flow and thermodynamic equilibrium of the phase. The thermal capacity of the heater wall has been included in the analysis. The model is used to study the effects of system pressure, flow flux, inlet subcolling, inlet/outlet restriction, gap size and the ratio of do/di and the ratio of qi/qo on system behavior.

关 键 词：蒸汽发生器 强迫循环 流动不稳定性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]