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Wetting angle and water sorptivity in mineral soils

Author

Listed:
  • Henryk Czachor

    (Deptartment of Microstructure and Mechanics of Biomaterials, Institute of Agrophysics Polish Academy of Sciences in Lublin, Lublin, Poland)

  • Maria Flis-Bujak

    (Soil Science Department, Agriculture Academy in Lublin, Lublin, Poland)

  • Marcin Kafarski

    (Deptartment of Microstructure and Mechanics of Biomaterials, Institute of Agrophysics Polish Academy of Sciences in Lublin, Lublin, Poland)

  • Andrzej Król

    (Deptartment of Microstructure and Mechanics of Biomaterials, Institute of Agrophysics Polish Academy of Sciences in Lublin, Lublin, Poland)

Abstract

Two simple models of a non-cylindrical (wavy) capillary have been applied to show the impact of pore shape and of wetting angle on water sorptivity in soils. Wetting angle derived from the Washburn approach gives an overestimated value because of pores are modelled as round capillary tubes, whereas in reality they are tortuous, wavy and interconnected. In wavy capillaries, the impact of wetting angle on water sorptivity and capillarity driven water transport can be much more pronounced in relation to Washburn approach. An observed wetting front movement can be seen as a superposition of micro jumps and rests. Experiments carried out with glass powder and two soils confirm the above predictions.

Suggested Citation

  • Henryk Czachor & Maria Flis-Bujak & Marcin Kafarski & Andrzej Król, 2008. "Wetting angle and water sorptivity in mineral soils," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 3(SpecialIs), pages 52-57.
    • Handle: RePEc:caa:jnlswr:v:3:y:2008:i:specialissue1:id:1201-swr
    DOI: 10.17221/1201-SWR
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    Cited by:

    1. Tomáš Orfánus & Zoltán Bedrna & Ľubomír Lichner & Paul D. Hallett & Karol Kňava & Michal Sebíň, 2008. "Spatial variability of water repellency in pine forest soil," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 3(SpecialIs), pages 123-129.

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