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Conference Paper: Droplet Interaction with Hydrophobic Granular Materials: An Insight with the Lattice Boltzmann Method

TitleDroplet Interaction with Hydrophobic Granular Materials: An Insight with the Lattice Boltzmann Method
Authors
KeywordsSoil water repellency
Droplet dynamics
Lattice boltzmann
Issue Date2018
PublisherSpringer.
Citation
8th International Congress on Environmental Geotechnics (8ICEG): Towards a Sustainable Geoenvironment, Hangzhou, China, 28 October-1 November 2018. In Proceedings of the 8th International Congress on Environmental Geotechnics Volume 3, p. 219-226 How to Cite?
AbstractWater repellent soils, or hydrophobic soils, are described as having delayed wetting of the soil surface and reduced amount of water infiltration, which has been proposed as alternative slope cover materials. The degree of soil water repellency is usually judged by the droplet interaction with the soil surface in the experimental studies. Hence, in this study, the potential capability of the Lattice Boltzmann (LB) method in studying the droplet dynamics on a granular surface with varying wettability is demonstrated, of which the implications to characterizing the soil water repellency are discussed. Simulations are performed on the droplet standing, infiltrating and sliding. On a horizontal surface, LB method can be used to interpret the intrinsic contact angle (CA) at the particle level by simulating the droplet standing with an apparent CA or the time for a droplet to infiltrate. On an inclined surface, LB method helps seek the critical combination of CA and slope angle to trigger the droplet movement, which prevents the accumulation of water on a slope. Therefore, performing the LB simulations within those scenarios will reveal the performance of the water repellent soils in resisting the water infiltration.
Persistent Identifierhttp://hdl.handle.net/10722/265210
ISBN
ISSN
2023 SCImago Journal Rankings: 0.120
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorKang, H-
dc.contributor.authorNunes Lourenco, SD-
dc.contributor.authorYan, RWM-
dc.date.accessioned2018-11-20T02:02:13Z-
dc.date.available2018-11-20T02:02:13Z-
dc.date.issued2018-
dc.identifier.citation8th International Congress on Environmental Geotechnics (8ICEG): Towards a Sustainable Geoenvironment, Hangzhou, China, 28 October-1 November 2018. In Proceedings of the 8th International Congress on Environmental Geotechnics Volume 3, p. 219-226-
dc.identifier.isbn9789811322266-
dc.identifier.issn1863-5520-
dc.identifier.urihttp://hdl.handle.net/10722/265210-
dc.description.abstractWater repellent soils, or hydrophobic soils, are described as having delayed wetting of the soil surface and reduced amount of water infiltration, which has been proposed as alternative slope cover materials. The degree of soil water repellency is usually judged by the droplet interaction with the soil surface in the experimental studies. Hence, in this study, the potential capability of the Lattice Boltzmann (LB) method in studying the droplet dynamics on a granular surface with varying wettability is demonstrated, of which the implications to characterizing the soil water repellency are discussed. Simulations are performed on the droplet standing, infiltrating and sliding. On a horizontal surface, LB method can be used to interpret the intrinsic contact angle (CA) at the particle level by simulating the droplet standing with an apparent CA or the time for a droplet to infiltrate. On an inclined surface, LB method helps seek the critical combination of CA and slope angle to trigger the droplet movement, which prevents the accumulation of water on a slope. Therefore, performing the LB simulations within those scenarios will reveal the performance of the water repellent soils in resisting the water infiltration.-
dc.languageeng-
dc.publisherSpringer.-
dc.relation.ispartofProceedings of the 8th International Congress on Environmental Geotechnics Volume 3-
dc.rightsThe final publication is available at Springer via http://dx.doi.org/[insert DOI]-
dc.subjectSoil water repellency-
dc.subjectDroplet dynamics-
dc.subjectLattice boltzmann-
dc.titleDroplet Interaction with Hydrophobic Granular Materials: An Insight with the Lattice Boltzmann Method-
dc.typeConference_Paper-
dc.identifier.emailNunes Lourenco, SD: lourenco@hku.hk-
dc.identifier.emailYan, RWM: ryanyan@hku.hk-
dc.identifier.authorityNunes Lourenco, SD=rp01872-
dc.identifier.authorityYan, RWM=rp01400-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/978-981-13-2227-3_27-
dc.identifier.scopuseid_2-s2.0-85060636277-
dc.identifier.hkuros296165-
dc.identifier.spage219-
dc.identifier.epage226-
dc.identifier.eissn1863-5539-
dc.identifier.isiWOS:000607217200027-
dc.publisher.placeSingapore-
dc.identifier.issnl1863-5520-

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