汽液两相流中的声速研究

导出了汽液两相流系统中的波数Ｋ方程。假设在特定的空泡份额下发生流型转化，分别采用不同的表达式计算泡状流及环状流区域相间界面面积及界面摩擦切应力，并提出计算弹状流区域相间界面面积及界面摩擦切应力的经验方法，通过解傅里叶边界层导热主获得界面热负。作者们编制了计算程序，在压力Ｐ＝０．０７～１６．０ＭＰａ，空泡份额ａ＝０～１．０，角频率ｗ＝１～１０＾８Ｈｚ的参数范围内进行了计算。将低压声速ａ的部分计算结果

INVESTIGATION ON SOUND SPEED IN STEAM- WATER TWO-PHASE MIXTURE

A general wavenumber K equation was developed in this paper.Flow pattern transitionsfrom one flow regime to the other were assumed to occur at certain void fractions,Differentcorrelations were used to calculate the interfacial area and interfacial drag force for bubblyflow and annular flow,and an empirical method was carried out to evaluate the interfacialarea and interfacial drag force for slug flow or churn flow,The Fourier boundary heat con-duction equation was solved to acquire the interphase heat flux.A program was developed based upon this prediction model,and calculations were con-ducted over a wide range of parameters for pressure from 0.07 to 16.0 MPa,void fraction from 0.0 to 1.0 and angular frequency from 1 to 108 Hz,The predicted sound speeds werecompared with some experimental data obtained bv different authors.