自励振動ヒートパイプにおける液柱往復振動に伴い生じる液膜に関する研究

（垂直円管の場合）

抄録

The thickness of a liquid film formed with liquid column oscillation was investigated experimentally. The liquid column was oscillated sinusoidally to simulate the flow phenomena in pulsating heat pipes. A vertically located circular glass tube with an inner diameter of 2 mm was used as the test channel. The average liquid film thickness during liquid column oscillation varied as a function of the average capillary number. The experimental results were compared to those in the horizontal pipe. The results showed that the gravity affected the thickness of the liquid film.