title: Formation of bubbly horizon in liquid-saturated porous medium by surface temperature oscillation.
abstract: We study nonisothermal diffusion transport of a weakly soluble substance in a liquid-saturated porous medium in contact with a reservoir of this substance. The surface temperature of the porous medium half-space oscillates in time, which results in a decaying solubility wave propagating deep into the porous medium. In this system, zones of saturated solution and nondissolved phase coexist with ones of undersaturated solution. The effect is first considered for the case of annual oscillation of the surface temperature of water-saturated ground in contact with the atmosphere. We reveal the phenomenon of formation of a near-surface bubbly horizon due to temperature oscillation. An analytical theory of the phenomenon is developed. Further, the treatment is extended to the case of higher frequency oscillations and the case of weakly soluble solids and liquids.
authors.affiliation: Institute of Continuous Media Mechanics, UB RAS, 1 Academik Korolev str., Perm 614013, Russia.|Department of Theoretical Physics, Perm State University, 15 Bukireva str., Perm 614990, Russia.|Department of Mathematics, University of Leicester, University Road, Leicester LE1 7RH, United Kingdom.
authors.forename: Denis S
authors.initials: DS
authors.lastname: Goldobin
authors.affiliation: Institute of Continuous Media Mechanics, UB RAS, 1 Academik Korolev str., Perm 614013, Russia.
authors.forename: Pavel V
authors.initials: PV
authors.lastname: Krauzin