DRIFT FLUX MODEL FOR LARGE DIAMETER PIPE AND NEW CORRELATION FOR POOL VOID FRACTION
DRIFT FLUX MODEL FOR LARGE DIAMETER PIPE AND NEW CORRELATION FOR POOL VOID FRACTION
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DOI：
10.1016/0017-9310(87)90251-1
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发表时间：
1987-09-01
影响因子：
5.2
通讯作者：
ISHII, M
中科院分区：
文献类型：
--
作者：
KATAOKA, I;ISHII, M
泡状或沸腾池系统的含气率是分析传热传质过程的重要参数之一。使用漂移通量公式，池空泡率的相关性已经开发出与大量的实验数据进行比较。研究发现，油气藏系统中的漂移速度取决于容器直径、系统压力、气体流量和流体物理性质。结果表明，相对速度和空隙率可以很大的不同，从传统的关联式预测。在上升速度方面，确定了四种不同的制度。这些是泡沫，搅动湍流，蛞蝓和帽泡沫制度。本关联式与实验数据一致，在很宽的参数范围内，如容器直径，系统压力，气体流量和物理性质。
A void fraction for a bubbling or boiling pool system is one of the important parameters in analyzing heat and mass transfer processes. Using the drift flux formulation, correlations for the pool void fraction have been developed in comparison with a large number of experimental data. It has been found that the drift velocity in a pool system depends upon vessel diameter, system pressure, gas flux and fluid physical properties. The results show that the relative velocity and void fraction can be quite different from those predicted by conventional correlations. In terms of the rise velocity, four different regimes are identified. These are bubbly, churn-turbulent, slug and cap bubble regimes. The present correlations are shown to agree with the experimental data over a wide range of parameters such as vessel diameter, system pressure, gas flux and physical properties.