Numerical simulation of subcooled boiling water at low pressure incorporating homogeneous MUSIG model
Applying a three-dimensional two-fluid model coupled with homogeneous MUSIG approach, numerical simulations of subcooled water at low pressure were performed on the computational fluid dynamics code CFX-10 with user defined FORTRAN program. A modified bubble departure diameter correlation based on the Unal semi-mechanism model was developed. The water boiling flow experiments at low pressure in vertical concentric annulus from reference were used to validate the models. Good quantitative agreement with the experimental data is obtained, including the local distribution of bubble diameter, void fraction, axial liquid and vapor velocity. The results indicate that local bubble diameter first increases and then decreases due to the effect of bubble breakup and coalescence, and has the maximum bubble diameter along the radial directioa Moreover, the peak void fraction phenomenon in the vicinity of the heated wall is predicted at low pressure, which is developed due to the surface tension between vapor bubbles and heated wall.
Subcooled Boiling Flow Two-fluid Model Homogeneous MUSIG Bubble Departure Diameter
E.F.Chen Y.Z.Li X.H.Cheng Lei Wang
School of Energy and Power Engineering, Xian Jiaotong University, China State Key Laboratory of Multiphase Flow in Power Engineering, Xian Jiaotong University, China
国际会议
西安
英文
986-991
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）