Influences of hydrate morphology and hydrate distribution heterogeneity on the mechanical properties of hydrate-bearing sediments using the discrete element method

Ding, Yanlu; Qian, Anna; Lu, Hailong

doi:10.1007/s40948-022-00410-5

Cited by 9 publications

(6 citation statements)

References 35 publications

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Section: Models Of Hydrate-bearing Sedimentsmentioning

confidence: 99%

Section: Models Of Hydrate-bearing Sedimentsmentioning

confidence: 99%

“…During the generation of hydrate particles, overlapping is not allowed with existing particles. Ding et al 82 expanded the sediment particles first and then randomly created hydrate particles in the shrink pore spaces. After a given number of hydrate particles were generated, the sediment particles resumed to their original sizes.…”

Section: Pore-fillingmentioning

confidence: 99%

“…In this method, not all hydrate particles can reach the contact between sediment particles, and some hydrate particles attach to a free surface of sediment particles. Ding et al 82 proposed a new model to create cementing hydrates, as shown in Figure 6(b). First, certain hydrate particles are randomly generated in the sediment pore spaces.…”

Section: Pore-fillingmentioning

confidence: 99%

“…The shear strength, stiffness, and dilation of heterogeneous hydrates are improved compared to those of homogeneous hydrates. Ding et al 82 further studied the pore-scale heterogeneity distribution of different types of hydrates. The pore-scale heterogeneous distribution also promotes the mechanical properties of HBSs.…”

Section: Applications Of Dem In Modeling Hydrate-bearing Sedimentsmentioning

confidence: 99%

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Applications of the Discrete Element Method for Gas Hydrate-Bearing Sediments: Recent Advances and Perspectives

Ding

Qian

2022

Energy Fuels

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The understanding of the mechanical properties of hydrate-bearing sediments (HBSs) is fundamental to the safe and efficient exploitation of natural gas hydrates. HBSs are granular materials composed of detrital mineral particles and hydrates. The inherent heterogeneity, discontinuity, and anisotropy cannot be effectively treated by continuum-based numerical methods. The discrete element method (DEM) has been widely used for modeling geomaterials, such as soils and rocks. Recently, it has been increasingly applied to study the mechanical properties of HBSs at the particle level. This paper presents a comprehensive review of recent advances in studies of simulating hydrate-bearing sediment models using the DEM, including complex hydrate-bearing models and their applications. The contact models and micromechanical parameters used in the DEM models are summarized, and the various applications, including laboratory tests, submarine landslides, and hydraulic fracturing, are discussed. In addition, the advantages and challenges for future studies are discussed. This review is beneficial to help researchers thoroughly understand the state-of-the-art DEM modeling of HBSs.

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Section: Models Of Hydrate-bearing Sedimentsmentioning

confidence: 99%

Section: Models Of Hydrate-bearing Sedimentsmentioning

confidence: 99%

Section: Pore-fillingmentioning

confidence: 99%

Section: Pore-fillingmentioning

confidence: 99%

Section: Applications Of Dem In Modeling Hydrate-bearing Sedimentsmentioning

confidence: 99%

See 3 more Smart Citations