基于COMSOL的气液两相流空隙率研究

摘要

The electrical resistance tomography technique is used to research the void fraction of gas-liquid two-phase flow and the sensitivity coefficient of an element in the section is calculated by the multiphysics coupling software named COMSOL, and then the voidage can be obtained. At the same time, the distribu-tions of measured voltage for three typical stream pattern of gas-liquid two-phase flow are simulated re-spectively. So the stream pattern can be identifited roughly according to fluctuation of the measured voltage. The method proposed in this paper can get the void fraction of gas-liquid two-phase flow and it is valu-able for researching of two-phase fluid dynamics and engineering application.%　　文章利用电阻层析成像技术对管道内的气液两相流进行空隙率研究，并利用多物理场耦合软件COMSOL计算出了截面上单元的灵敏度系数，进而可得到空隙率值。文中还对气液两相流三种典型流型下的测量电压值分布形式进行了模拟，从而可以根据测量电压值的波动情况进行初步的流型辨识。该文提出的方法能够获得气液两相流的空隙率，对两相流体力学的研究以及工程应用都具有较大的价值。