【摘要】 在双面加热的垂直环形窄缝通道内,对向上流动环状流的临界热流密度(CHF)进行理论研究,以质量、动量和能量守恒方程为基础建立数学物理模型。对该模型进行数值求解,得到了不同窄缝间隙通道内的CHF和临界含汽率的关系曲线,分析得出压力对CHF的影响,并将理论计算值与实验值进行比较。更多还原

【Abstract】 In the vertical narrow annular channel with bilateral heating, the critical heat flux of annular upward flow was studied. A mathematical model on the base of the mass, momentum and energy conversation equations was developed. By numerically solving the (equations), the relationship between CHF and critical quality is obtained,and the influences of pressure on CHF were analyzed. The CHF obtained by the present model was compared with those from experiments.更多还原