水平管液塞区相分布特征研究  

Phase Distribution Characteristics of Liquid Slug in Horizontal Pipe Flow

作　　者：王鑫[1,2] 王同吉[1] 何利民[1] 

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266555 [2]西安交通大学多相流国家重点实验室,陕西西安710049

出　　处：《工程热物理学报》2012年第4期611-615,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50806083);山东省自然科学基金资助项目(No.ZR2011EEM029);西安交通大学动力工程多相流国家重点实验室及中央高校基本科研业务费专项资金(No.09CX04021A)

摘　　要：设计建造了研究段塞流中液塞卷吸气体的实验装置,采用双头电导探针测量了水平管内固定液塞区域的局部相分布。液塞区含气率的径向分布存在峰值,表明液塞区存在湍流剪切层。随着进入液塞距离增大,含气率峰值减小,峰值对应的径向位置升高。这说明湍流剪切层内的湍流程度减弱,剪切层厚度变大。提出了计算水平管液塞截面平均含气率的方法,发现随着进入液塞距离的增大,截面平均含气率首先迅速减小,然后逐渐趋于稳定。An experimental facility was constructed in horizontal pipe to study the gas entrainment in slug flow.The local phase distribution in liquid slug was measured by double-sensor conductivity probe.The measurements showed that there is a peak in the vertical distribution of the void fraction, indicated the existence of a turbulence shear layer.With the distance into the slug increasing,the void fraction peak of the vertical profile decreases and its position rises.It is shown that the thickness of the turbulent shear layer increases and the turbulent intensity decreases with increasing of the distance into the slug.A new method was proposed to calculate the cross section average void fraction in horizontal liquid slug.It is found that at first the average void fraction decreases quickly but then it tends stably while the distance into the slug increases.

关 键 词：两相流 段塞流 相分布 气体卷吸 

分 类 号：O359[理学—流体力学]