G050072 傾斜板上での液膜流と液柱流の遷移現象に関する実験

抄録

Gas-liquid interfacial flows, such as liquid film flows (wetting flows on walls), are encountered in many industrial processes including absorption, distillation, etc. One of the representative factors ensuring the efficient mass transfer is the interfacial area between gas and liquid. The present study shows the changes of the interfacial area due to the liquid flow rate and the surface texture. The liquid film thickness and the wetted area are measured for the film and rivulet flows on the smooth and triangular wavy surface. The liquid film thickness and the wetted area obtained in our experiment are validated by the comparison with theoretical results and the simulation results based on the volume of fluid (VOF) model. The wetted area is expanded on the wavy surface rather than the smooth surface because the wavy surface assists the liquid spreading to the horizontal direction.