【摘要】 本文从汽液界面紊流脉动受到抑制的物理基础出发，提出对近界面缓冲层的混合长理论应进行修正，通过试验得到了相应的数学表达式及速度分布，并据此发展了一个新的环状流液膜换热模型。通过与试验值的比较，本文模型的计算结果与现有模型的计算结果相比较更趋于合理。更多还原

【Abstract】 Based on the phenomenon of turbulence in liquid-vapor interface suppressed, an analytical model is proposed for annular flow with a velocity disctribution and the liquidvapor interface affecting district mixlenght model, on the base a new liquid film convective evaporation heat transfer model at annular flow was developed. Compared with experimental data, the results show that the new model is better than the model on full tube flow velocity distribution.更多还原