Characteristics of the second stage of evaporation and water redistribution through double layered sandy soil profiles

A. Alowaisy, N. Yasufuku

Research output: Contribution to journalArticle

Abstract

Evaporation from porous media involves a complex pore scale water and vapor transportation that directly affects the liquid phase distribution and fluxes. The presence of textural contrast boundary in multilayered profiles adds to the complexity. This study aims at evaluating the textural contrast boundary depth and individual layer thickness influence on the actual evaporation and water storage through double-layered soil profiles. For coarse overlying fine sand, it was found that the top layer small capillaries contribute to the majority of water lost through the falling rate stage. Considering fine overlying coarse sand profiles, the pumping phenomenon from the bottom coarse layer to the top fine layer occurs before the arrival of the drying front to the textural boundary due to the increasing suction forces within the top fine layer. The water storage capability of double layered soil profiles depends highly on the top to the bottom small capillaries ratio multiplied by the layer thickness ratio. Regardless the atmospheric conditions and layering sequence, it was concluded that the shallower the textural contrast boundary results in decreasing the total duration required to achieve the residual evaporation stage thus leads to higher water storage capabilities through the first and second evaporation stages.

Original languageEnglish
Pages (from-to)273-284
Number of pages12
Journallowland technology international
Volume20
Issue number3
Publication statusPublished - Jan 1 2018

Fingerprint

Evaporation
Soils
Water
Sand
Porous materials
Drying
Vapors
Fluxes
Liquids

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Characteristics of the second stage of evaporation and water redistribution through double layered sandy soil profiles. / Alowaisy, A.; Yasufuku, N.

In: lowland technology international, Vol. 20, No. 3, 01.01.2018, p. 273-284.

Research output: Contribution to journalArticle

@article{10347ff71b0f4a84ab9c2bfec680bec5,
title = "Characteristics of the second stage of evaporation and water redistribution through double layered sandy soil profiles",
abstract = "Evaporation from porous media involves a complex pore scale water and vapor transportation that directly affects the liquid phase distribution and fluxes. The presence of textural contrast boundary in multilayered profiles adds to the complexity. This study aims at evaluating the textural contrast boundary depth and individual layer thickness influence on the actual evaporation and water storage through double-layered soil profiles. For coarse overlying fine sand, it was found that the top layer small capillaries contribute to the majority of water lost through the falling rate stage. Considering fine overlying coarse sand profiles, the pumping phenomenon from the bottom coarse layer to the top fine layer occurs before the arrival of the drying front to the textural boundary due to the increasing suction forces within the top fine layer. The water storage capability of double layered soil profiles depends highly on the top to the bottom small capillaries ratio multiplied by the layer thickness ratio. Regardless the atmospheric conditions and layering sequence, it was concluded that the shallower the textural contrast boundary results in decreasing the total duration required to achieve the residual evaporation stage thus leads to higher water storage capabilities through the first and second evaporation stages.",
author = "A. Alowaisy and N. Yasufuku",
year = "2018",
month = "1",
day = "1",
language = "English",
volume = "20",
pages = "273--284",
journal = "Lowland Technology International",
issn = "1344-9656",
publisher = "International Association of Lowland Technology",
number = "3",

}

TY - JOUR

T1 - Characteristics of the second stage of evaporation and water redistribution through double layered sandy soil profiles

AU - Alowaisy, A.

AU - Yasufuku, N.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Evaporation from porous media involves a complex pore scale water and vapor transportation that directly affects the liquid phase distribution and fluxes. The presence of textural contrast boundary in multilayered profiles adds to the complexity. This study aims at evaluating the textural contrast boundary depth and individual layer thickness influence on the actual evaporation and water storage through double-layered soil profiles. For coarse overlying fine sand, it was found that the top layer small capillaries contribute to the majority of water lost through the falling rate stage. Considering fine overlying coarse sand profiles, the pumping phenomenon from the bottom coarse layer to the top fine layer occurs before the arrival of the drying front to the textural boundary due to the increasing suction forces within the top fine layer. The water storage capability of double layered soil profiles depends highly on the top to the bottom small capillaries ratio multiplied by the layer thickness ratio. Regardless the atmospheric conditions and layering sequence, it was concluded that the shallower the textural contrast boundary results in decreasing the total duration required to achieve the residual evaporation stage thus leads to higher water storage capabilities through the first and second evaporation stages.

AB - Evaporation from porous media involves a complex pore scale water and vapor transportation that directly affects the liquid phase distribution and fluxes. The presence of textural contrast boundary in multilayered profiles adds to the complexity. This study aims at evaluating the textural contrast boundary depth and individual layer thickness influence on the actual evaporation and water storage through double-layered soil profiles. For coarse overlying fine sand, it was found that the top layer small capillaries contribute to the majority of water lost through the falling rate stage. Considering fine overlying coarse sand profiles, the pumping phenomenon from the bottom coarse layer to the top fine layer occurs before the arrival of the drying front to the textural boundary due to the increasing suction forces within the top fine layer. The water storage capability of double layered soil profiles depends highly on the top to the bottom small capillaries ratio multiplied by the layer thickness ratio. Regardless the atmospheric conditions and layering sequence, it was concluded that the shallower the textural contrast boundary results in decreasing the total duration required to achieve the residual evaporation stage thus leads to higher water storage capabilities through the first and second evaporation stages.

UR - http://www.scopus.com/inward/record.url?scp=85065833641&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065833641&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85065833641

VL - 20

SP - 273

EP - 284

JO - Lowland Technology International

JF - Lowland Technology International

SN - 1344-9656

IS - 3

ER -