CAJ | 학술논문

采用光纤探针测量方法研究了垂直上升管中空气-水两相流动的局部界面面积浓度（IAC）和空泡份额等分布规律。实验选用的圆管直径为100mm，气相、液相表观速度的范围分别为0～0.1m/s和0～1.0m/s。结果发现，影响径向IAC分布的因素主要为气泡通过频率。基于Ishii-Kim界面输运模型，对轴向IAC进行了计算；通过分析4种气泡间相互作用对IAC的影响，发现工作压力是影响轴向IAC变化的主要因素，最后给出了引入工作压力影响的轴向IAC计算关联式。
채용광섬탐침측량방법연구료수직상승관중공기-수량상류동적국부계면면적농도（IAC）화공포빈액등분포규률。실험선용적원관직경위100mm，기상、액상표관속도적범위분별위0～0.1m/s화0～1.0m/s。결과발현，영향경향IAC분포적인소주요위기포통과빈솔。기우Ishii-Kim계면수운모형，대축향IAC진행료계산；통과분석4충기포간상호작용대IAC적영향，발현공작압력시영향축향IAC변화적주요인소，최후급출료인입공작압력영향적축향IAC계산관련식。
Local distribution of the interfacial area concentration (IAC) and void fraction of air-water two-phase flow in a vertical pipe were investigated by using the measurement of optical fiber probe . The inner diameter of the circular pipe was 100 mm , and superficial gas and liquid velocities ranged from 0 to 0.1 m/s and from 0 to 1.0 m/s , accordingly .It is found that the bubble passing through frequency dominates the radial distribution profile of IAC .The axial interfacial area concentration was calculated based on the interfacial area transport model of Ishii-Kim .In the mean time ,the analysis of four bubble interaction mechanisms determining the change of IAC show s that it is the local pressure inside the pipe that dominates the value of IAC in the axial direction .A new correlation including the effect of pressure was given for calculating the axial IAC .