Polytechnic University of Valencia Congress, 21st International Drying Symposium

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Drying intensification by vibration: fundamental study of liquid water inside a pore
Wangshu Chen, Julien Colin, Joel Casalinho, Mohamed El Amine Ben Amara, Moncef Stambouli, Patrick Perré

Last modified: 03-01-2019

Abstract


Vibration is a promising way to intensify the drying process through heating-up due to viscous dissipation, activation of internal liquid transfer and increase of external transfer. To better assess the possible contribution of these effects, we choose a multiscale approach.

This paper is focused on the pore scale, simulated by a capillary tube partially filled with water subjected to sinusoidal vibrations. We studied the displacement of water inside this tube through image analysis. This configuration mimics the moisture transfer inside the pores of a porous media during drying.

The experimental device developed in this study is applicable to a wide range of configurations, such as symmetrical or asymmetrical vibrations.

Keywords: drying intensification, acoustic vibration, pore scale, symmetrical and asymmetrical signals, image processing.



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