Laboratory and numerical study of the flow field of subaqueous block sliding on a slope

Jin, Yee‐Chung; Guo, Kailun; Tai, Yih-Chin; Lu, Chun Hua

doi:10.1016/j.oceaneng.2016.07.067

Cited by 13 publications

(5 citation statements)

References 34 publications

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“…In the standard MPS simulation, the free surface boundary condition can be determined by Equation 27with assuming the absence of particles in the outer region of the free surface and the consequent reduction in the numerical density of the particles. 48 n * < 𝛽n 0 (27) In this relation, coefficient 𝛽 is in the range of 0.8-0.99, and 0.97 is often used for 𝛽, due to its negligible effects on the results. Based on this relationship, a particle is known as a free surface particle whose density (n*) is about 0.97 times less than the standard density (n 0 ).…”

Section: Free Surface Boundarymentioning

confidence: 99%

“…While MPS uses a kernel function to approximate the derivatives, SPH uses a derivative of a kernel function for this purpose. MPS and SPH have been used in several multiphase granular flow studies, particularly landslides, for example, in References 20–29. Among other meshless methods in the framework of continuum mechanics, we can mention the material point method (MPM), which is used to model landslides.…”

Section: Introductionmentioning

confidence: 99%

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Two‐ and three‐dimensional multiphase mesh‐free particle modeling of transitional landslide with μ(I) rheology

Jafari Nodoushan,

Tajnesaie,

Shakibaeinia

2024

Numerical Methods in Fluids

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Landslides, which are the sources of most catastrophic natural disasters, can be subaerial (dry), submerged (underwater), or semi‐submerged (transitional). Semi‐submerged or transitional landslides occur when a subaerial landslide enters water and turns to submerged condition. Predicting the behavior of such a highly dynamic multi‐phase granular flow system is challenging, mainly due to the water entry effects, such as wave impact and partial saturation (and resulted cohesion). The mesh‐free particle methods, such as the moving particle semi‐implicit (MPS) method, have proven their capabilities for the simulation of the highly dynamic multiphase systems. This study develops and evaluates a numerical model, based on the MPS particle method in combination with the μ(I) rheological model, to simulate the morphodynamic of the granular mass in semi‐submerged landslides in two and three dimensions. An algorithm is developed to consider partial saturation (and resulting cohesion) during the water entry. Comparing the numerical results with the experimental measurements shows the ability of the proposed model to accurately reproduce the morphological evolution of the granular mass, especially at the moment of water entry.

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Section: Free Surface Boundarymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two‐ and three‐dimensional multiphase mesh‐free particle modeling of transitional landslide with μ(I) rheology

Jafari Nodoushan,

Tajnesaie,

Shakibaeinia

2024

Numerical Methods in Fluids

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“…Meanwhile, the affecting factors of the impulsive waves have attracted the researchers to pay more attention. In order to understand the complexities of the impulsive waves, investigations of the landslides on different affecting factors namely water depth, velocity of sliding masses, configuration of sliding masses, initial condition of landslides, and inclined slope angle have been studied by several researchers (Ataie-Ashtiani and Nik- Khah, 2008;Ataie-Ashtiani and Shobeyri, 2008;Fritz, 2002;Grilli and Watts, 2005;Heller et al, 2016;Jin et al, 2016;Watts, 1997). Despite the investigation of these affecting factors, the inclined slope angle indicates a significant role related to the real life since the gravitational force applied the major external force into these specific landslide cases.…”

Section: List Of Figuresmentioning

confidence: 99%

“…Details of the contour and vector plots were shown in the simulation domain. All of these investigations are on the landslide generated waves(Fu and Jin, 2015;Jin et al, 2016;Tajnesaie et al, 2018) on a specific bed slope angle of 45°.…”

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confidence: 99%

A numerical and experimental investigation of wave generated by submerged landslides

Jin

Tai

2020

Ocean Engineering

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Haojia Li, candidate for the degree of Master of Applied Science in Environmental Systems Engineering, has presented a thesis titled, A Numerical and Experimental Investigation of Wave Generated by Submerged Landslides, in an oral examination held on July 25, 2019. The following committee members have found the thesis acceptable in form and content, and that the candidate demonstrated satisfactory knowledge of the subject material.

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“…The results show that this method can simulate the flow process of SCC in rock-filled bodies, predict the compactness of RFC, and ultimately provide a reference for the design and construction practice of RFC engineering [19][20][21]. The MPS method was also used to investigate the geohazard mechanism [22,23] and flow performances of concrete [24,25]. Thus, the numerical simulation method including MPS has been widely used in many geotechnical applications, such as mining engineering, tunnel engineering, and slope engineering [26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

et al. 2022

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Grouting mortar has widespread application in engineering because of the advantages of good durability, low cost, and environmental friendliness. To study the flowing properties of grouting mortar, laboratory minislump tests taking different rheological parameters of grouting mortar into consideration were conducted to obtain the flow time and flow pattern of grouting mortar. A modified MPS method (moving-particle semi-implicit method) introduced two sections of Bingham rheological, and segregation was proposed. The effects of the plastic viscosity on the flow state of mortar were studied, and the relationship between the plastic viscosity and the flowing time was established. The numerical results show that the modified MPS method can be used to predict the flow time and flow pattern of mortar in the template, and plastic viscosity has a great influence on the flow time of concrete, and with the increase of plastic viscosity, the time to flow to the specified area also increases. Moreover, the analysis of the rheological parameters can provide the basis for the design of mix ratio in the construction practice.

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Laboratory and numerical study of the flow field of subaqueous block sliding on a slope

Cited by 13 publications

References 34 publications

Two‐ and three‐dimensional multiphase mesh‐free particle modeling of transitional landslide with μ(I) rheology

Two‐ and three‐dimensional multiphase mesh‐free particle modeling of transitional landslide with μ(I) rheology

A numerical and experimental investigation of wave generated by submerged landslides

Experimental and Numerical Studies on Flowing Properties of Grouting Mortar Based on the Modified MPS Method

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