The flow field of double-row annular cascades of hydraulic turbines is studied by means of digital analysis in combination with model tests.
采用数值分析与模型实验相结合的方法，对水轮机导水部件双列环列叶栅流场进行了分析研究。
The model assumes that forced convection and nucleate boiling coexist in the annular flow regime.
该模型认为环状流区域同时存在强制对流与核态沸腾两种换热方式。
Considering gravity, interfacial shear stress, surface tension and interfacial thermal resistance, the analysis model for annular flow condensation heat transfer in microtube was presented.
本文提出了微圆管内环状流凝结换热的分析模型，考虑了重力、汽液界面剪切力、表面张力以及界面凝结热阻的作用。
The expressions of velocity and flow rate of helical flow of a general viscous fluid has been obtained by using helical flow in a vertical annular space as an idealized flow model.
本文用垂直同轴圆柱环形空间内的螺旋流流场作为钻井井内流体流场的理想化模型，得出了任意纯粘性流体螺旋流流场的速度及排量表达式。
Based on the theory of annular gas-liquid two-phase flow, a model to calculate gas-cutting fluid flow in wellbore is established, and meanwhile a numerical solution to the model is given.
以环空气液两相流动为理论基础，建立了井筒气侵流动计算模型，同时给出了计算模型的数值求解方法。
Comparison of simulation results with experimental data implies that present model can well describe upward gas-liquid annular flow.
模拟结果与实验结果的对比表明本模型适于这种流动的计算。
Comparison of simulation results with experimental data implies that present model can well describe upward gas-liquid annular flow.
模拟结果与实验结果的对比表明本模型适于这种流动的计算。
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