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Angle of repose of ...
Angle of repose of snow: An experimental study on cohesive properties
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- Eidevåg, Tobias, 1987 (författare)
- Volvo,Chalmers tekniska högskola,Chalmers University of Technology,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden; Contamination and Core CFD, Volvo Car Corporation, SE-40531 Gothenburg, Sweden
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- Thomson, Erik S (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg,Department of Chemistry & Molecular Biology, Atmospheric Science, University of Gothenburg, SE-41296 Gothenburg, Sweden
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- Kallin, D. (författare)
- Volvo,Contamination and Core CFD, Volvo Car Corporation, SE-40531 Gothenburg, Sweden
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- Casselgren, Johan, 1977- (författare)
- Luleå tekniska universitet,Strömningslära och experimentell mekanik
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- Rasmuson, Anders, 1951 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Cold Regions Science and Technology. - : Elsevier BV. - 0165-232X .- 1872-7441. ; 194
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Abstract
Ämnesord
Stäng
- The angle of repose is a measure reflecting the internal friction and cohesion properties of a granular material. In this paper, we present an experimental setup and measurements for the angle of repose of snow for seven different snow samples over a large range of temperatures. The results show that the angle of repose is dependent on the fall height, the temperature, and the grain size of the snow. These variables are quantified, and their interdependencies are separately studied. With increased snow temperature, the angle of repose increases, and this can be explained by the presence of a liquid layer on ice that can be thermodynamically stable at temperatures below the melting point of water. With decreasing grain size the angle of repose also increases which is expected since the cohesive energy decreases more slowly than the grain mass. For increasing fall height, the snow grains generally accelerate to larger collisional velocities, yielding a smaller angle of repose. In general, the dimensionless cohesion number was found to largely reflect the dependencies of the variables and is therefore useful for understanding what affects the angle of repose. The results demonstrate that the drag force and collision dynamics of ice grains are important for understanding how snow accumulates on a surface, for example if one desires predicting snow accretion by simulating a dispersed cloud of snow. © 2021
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Nyckelord
- Angle of repose
- premelting
- Snow
- Snow accumulation
- Snow adhesion
- Snow cohesion
- Snow physics
- Adhesion
- Drag
- Grain size and shape
- Temperature
- Cohesion properties
- Cohesive property
- Friction properties
- Grainsize
- Pre-melting
- Snow physic
- cohesion
- experimental study
- friction
- premelting
- Experimentell mekanik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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