Yeliseyev V. I., Lutsenko V. I. How wetting angle influences on the primary stage of saturation of body with homogeneous porous structure

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Parent Category: Geo-Technical Mechanics, 2017

Category: Geo-Technical Mechanics, 2017, Issue 132

 

Geoteh. meh. 2017, 132, 51-61

HOW WETTING ANGLE INFLUENCES ON THE PRIMARY STAGE OFSATURATION OF BODY WITH HOMOGENEOUS POROUS STRUCTURE

¹Yeliseyev V. I., ¹Lutsenko V. I.

¹IGTM NAS of Ukraine

UDC 532.6: 622.7

Abstract. This article describes an approximate model for calculating the initial stage of displacement of a gas bubble from a porous body of a homogeneous structure when immersed in a liquid. The model does not take into account the resistance at the entrance of liquid into the pores. The performed calculations demonstrate the occurrence of rapidly decaying gas bubble oscillations at the initial stage. In a uniform pore space with a constant wetting angle, the entire surface of the bubble is in a nonequilibrium state, except perturbations on the local portion of its surface, which results in bubble deformation and movement. These effects lead to bubble displacement. Wetting hysteresis adds degree of freedom to the elements of the phase interface. However, in a homogeneous pore space, according to calculations, this does not qualitatively change the displacement pattern. Based on the calculations, in a homogenous porous structure with approximately the same wetting conditions, the gas bubble must be pushed out of the depths of the porous body. To increase efficiency of saturation, it is best to move the liquid from one side.

Keywords: porous body, saturation, capillary forces, wetting hysteresis, gas bubble.

 

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About the authors

Yeliseyev Vladimir Ivanovich, Candidate of Physics and Mathematics Sciences, (Ph.D.), Senior Researcher, Senior Researcher in Department of Mine Energy Complexes, N. S. Polyakov Institute of Geotechnical Mechanics, under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Lutsenko Vasiliy Ivanovich, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher in Department of Mine Energy Complexes, N. S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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