Preprints
https://doi.org/10.5194/hess-2021-340
https://doi.org/10.5194/hess-2021-340

  26 Jul 2021

26 Jul 2021

Review status: this preprint is currently under review for the journal HESS.

Evaporation front and its motion

Jiří Mls Jiří Mls
  • Charles University, Faculty of Science, Albertov 6, 128 43 Praha 2, Czech Republic

Abstract. The evaporation demands upon a rock or soil surface can exceed the ability of the profile to bring sufficient amount of liquid water. A dry surface layer arises in the porous medium that enables just water vapor flow to the surface. The interface between the dry and wet parts of the profile is known as the evaporation front.

The paper gives the exact definition of the evaporation front and studies its motion. A set of differential equations governing the front motion in space is formulated. Making use of a set of measured and chosen values, a problem is formulated that illustrates the obtained theory. The problem is solved numerically and the results are presented and discussed.

Jiří Mls

Status: open (until 20 Oct 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on hess-2021-340', Anonymous Referee #1, 20 Aug 2021 reply
  • RC2: 'Comment on hess-2021-340', Anonymous Referee #1, 20 Aug 2021 reply
  • RC3: 'Comment on hess-2021-340', Anonymous Referee #1, 20 Aug 2021 reply

Jiří Mls

Jiří Mls

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Short summary
In the paper the evaporation front is considered as the interface that separates the wet part of a porous medium from its dry surrounding and its exact definition in time end space is given. Subsequently, the law of the front's motion is derived. The general problem governing completely the front's motion is formulated and, for a special case, solved numerically. It is shown that the solution makes it possible to locate the rate of vaporization in time and space.