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Precision and computational costs of Level Set-Discrete Element Method (LS-DEM) with respect to DEM
Computers and Geotechnics, 2021 International audienceThe Level Set-Discrete Element Method (LS-DEM) extends DEM towards arbitrary grain shapes by storing distance-to-surface values on a grid for each Discrete Element (DE), together with considering boundary nodes located onto the DE's
Jérôme Duriez, Stéphane Bonelli
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Simulation of cotyledon-soil dynamics using the discrete element method (DEM)
Computers and Electronics in Agriculture, 2020Abstract For epigeal seeds, cotyledons experience soil resistance as they move up through soil during the emergence process. Understanding cotyledon-soil dynamics is important for seedbed preparation to promote good seedling emergence. A discrete element model (DEM) was developed to simulate soybean seedling emergence.
Zhiwei Zeng, Ying Chen, Long Qi
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Simulations of soil flow properties using the discrete element method (DEM)
Computers and Electronics in Agriculture, 2019Abstract Understanding soil flow properties is important for designing high-performance soil-engaging tools in agriculture. In this study, soil flow tests were conducted for a sandy loam soil using the lifting cylinder method to obtain the angle of repose (AOR) of the soil.
Long Qi, Ying Chen, Mohammad Sadek
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Selection of an appropriate time integration scheme for the discrete element method (DEM)
Computers & Chemical Engineering, 2008Abstract With increasing computer power simulation methods addressing discrete problems in a broad range of scientific fields become more and more available. The discrete element method is one of these discontinuous approaches used for modeling granular assemblies.
Harald Kruggel-Emden +3 more
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Discrete element method (DEM) simulation to improve performance of a mouldboard skimmer
Soil and Tillage Research, 2021Abstract Historically, most mouldboard plough research has been focused on improving the performance of the mouldboard itself, with very little focus on other plough components such as the skimmer. The skimmer is a critical additional component of the overall mouldboard plough which affects its performance in the field.
Chris Saunders +2 more
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Simulation of the Slump Test Based on the Discrete Element Method (DEM)
Advanced Materials Research, 2012The slump test is a very important industrial test for evaluation of workability of fresh granular-cement paste material, especially concrete. The test method is used as a generic tool for classification of a wide range of mixtures and can deal with a wide range of workabilities.
Hooman Hoornahad, Eduard A. B. Koenders
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Application of the Discrete Element Method (DEM) on Ship-Ice Interaction
SNAME 10th International Conference and Exhibition on Performance of Ships and Structures in Ice, 2012Sailing through ice requires modifications to the standard ship form in terms of structural strength and hull lines. For ships that sail through light ice or brash ice channels, assisted where necessary by an icebreaker, the challenge lies in striking a balance between optimizing the hull for open water and ice conditions, bearing in mind the ...
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Comparison of Two Subsoiler Designs Using the Discrete Element Method (DEM)
Transactions of the ASABE, 2018Abstract. Subsoiling is an essential tillage practice for loosening soil and enhancing water infiltration. In this study, a discrete element model was developed and validated to simulate soil-tool interactions. The validated model was then used to evaluate two design alternatives of subsoiling tool: a non-winged tool (NW) and a winged tool (WW).
Bo Li, Ying Chen, Jun Chen
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Prediction of screw conveyor performance using the Discrete Element Method (DEM)
Powder Technology, 2009Screw conveyors are used extensively in agriculture and industry for transporting and/or elevating bulk materials over short to medium distances. They are very effective conveying devices for dry particulate solids, giving good control over the throughput. Despite their apparent simplicity, the mechanics of the transportation action is very complex and
P.J. Owen, P.W. Cleary
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Introduction to the Discrete Element Method (DEM)
2023Fengshou Zhang +2 more
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