This paper focuses on the experimental investigation of the dynamic characteristic of a liquid-gas (or vapor) interface, which occurs in very small diameter pores. For both Loop Heat Pipes, being developed as a thermal control device for microelectronics in space applications, and the de-watering process in a vibro-separator, the dynamic characteristics of a liquid-gas interface inside micropores greatly affects the efficiency of the entire system. In the pharmaceutical industries, product particles are discharged in the form of a dilute slurry from a reactor to a de-watering device, such as a vibro-separator. For extremely small pores, gravity is insufficient for removing the excess water through the micro porous screen. For these cases, it has been suggested that the de-watering process can be initiated by utilizing a vacuum pressure beneath the screen and applying a sinusoidal vibration to the screen. To understand the phenomena of de-watering from the product screen of a vibro-separator utilizing vibration and pressure, a single liquid-filled micropore is studied. In past studies [1], the Navier-Stokes and Young-Laplace equations have been used to describe the dynamic motion of the liquid column and liquid-gas interface. In this research, comparison is made between the amplitude and frequency of acceleration required to cause the bubble burst through predicted theoretically and measured experimentally.

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