并列螺旋管圈管内两相流不稳定性程序 OTSGI

OTSGI——A Program Analysing TwoPhaseFlow Instabilities in Helical tubes of OnceThrough Steam Generator

研究了螺旋管直流蒸汽发生器两相流不稳定性。利用线性化频域理论，采用分相模型，考虑到了管壁动态特性，建立了螺旋管直流蒸汽发生器两相流不稳定数学模型，编制了计算程序ＯＴＳＧＩ，分析了入口节流圈、系统压力等因素对不稳定性的影响，给出了螺旋管直流蒸汽发生器两相流不稳定区域。

his paper has studied the twophases flow instabilities of the helical tubes of oncethrough steam generator.Using linerfrequencydomain analytical method,we have derived out a mathematical model and designed the program.In this model,we also have considered the thermal dynamic characteristics of the tube's wall.The program is used to calculate the threshold of the stability and the influences of some factors,such as entrance throttling coefficient,system pressure,entrance supercooling degree,et al.The outcomes are compared with other studies.