Modeling free-surface flows of granular column collapses using a mesh-free method

Xu, Tibing; Jin, Yee‐Chung

doi:10.1016/j.powtec.2015.12.005

Cited by 35 publications

(19 citation statements)

References 31 publications

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“…In the saturated soils, the effective pressure ( ) appears in the µ(I) relation. In this research, and are 0.62 and 0.000001, respectively (Chauchat and Médale, 2014;Xu and Jin, 2016).…”

Section: Fig 2 a View Of Normal And Shear Stresses Supported By Difmentioning

confidence: 79%

“…The relation between the shear and the normal stress in this model is defined by Eq. (11) (Xu and Jin, 2016).…”

Section: Rheological Modelmentioning

confidence: 99%

“…(13) = + 2 − 1 + / , 2 and are the parameters related to each material and is determined in the lab (Xu and Jin, 2016;Kheirkhahan and Hosseini, 2018).…”

Section: Fig 2 a View Of Normal And Shear Stresses Supported By Difmentioning

confidence: 99%

“…= 0.279, = 20.90° and 2 = 32.76° (Lajeunesse et al 2005;Xu and Jin, 2016). According to Kheirkhahan and Hosseini (2018), the velocity of gate opening is considered 0.8 m/s.…”

Section: Modeling the Movement Of Grainsmentioning

confidence: 99%

“…Here, we use the experimental data of Spinewine (2005) for the validation. The rheological parameters of sediments are: = 2683 / 3 , = 1.82 , = 0.279 , = 30.5° and 2 = 51.3° (Spinewine, 2005;Xu and Jin, 2016) Fig. 8.…”

Section: Water-sediment Two-phase Modeling Of Dam Break On a Loose Bomentioning

confidence: 99%

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Effective Pressure for Two Phase Water-Sediment Models using SPH Method

Kheirkhahan¹,

Omidvar²,

Hosseini³

2020

JAFM

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Sediment transport in the aquatic environment is one of the complex two-phase problems in flow mechanics and sediment hydraulics. In this study, the interaction between water and sediment is explored using the SPH method and developed SPHysics2D in which the pressure values are calculated using the state equation. In this study, the non-Newtonian rheological model µ(I) is used for modeling the sediment phase where it is developed based on the properties of granular particles. Also, the effective pressure is used for the study of sediment behavior. The method used in this research is compared with the methods used by other researchers. The Owen equation is utilized to determine the effect of viscosity within the two-phase area. The developed method is evaluated by the dam break on a dynamic bed and then, the experimental model of submerged sediment column collapse is investigated in the aquatic environment. The results of the modeling demonstrate the capabilities of the developed code for the use in the flow and sediment hydraulics.

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“…In the saturated soils, the effective pressure ( ) appears in the µ(I) relation. In this research, and are 0.62 and 0.000001, respectively (Chauchat and Médale, 2014;Xu and Jin, 2016).…”

Section: Fig 2 a View Of Normal And Shear Stresses Supported By Difmentioning

confidence: 79%

“…The relation between the shear and the normal stress in this model is defined by Eq. (11) (Xu and Jin, 2016).…”

Section: Rheological Modelmentioning

confidence: 99%

“…(13) = + 2 − 1 + / , 2 and are the parameters related to each material and is determined in the lab (Xu and Jin, 2016;Kheirkhahan and Hosseini, 2018).…”

Section: Fig 2 a View Of Normal And Shear Stresses Supported By Difmentioning

confidence: 99%

“…= 0.279, = 20.90° and 2 = 32.76° (Lajeunesse et al 2005;Xu and Jin, 2016). According to Kheirkhahan and Hosseini (2018), the velocity of gate opening is considered 0.8 m/s.…”

Section: Modeling the Movement Of Grainsmentioning

confidence: 99%

Section: Water-sediment Two-phase Modeling Of Dam Break On a Loose Bomentioning

confidence: 99%

See 3 more Smart Citations

Effective Pressure for Two Phase Water-Sediment Models using SPH Method

Kheirkhahan¹,

Omidvar²,

Hosseini³

2020

JAFM

View full text Add to dashboard Cite

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Three‐dimensional weakly compressible moving particle simulation coupled with geometrically nonlinear shell for hydro‐elastic free‐surface flows

Junior

Neto

Cheng

2022

Numerical Methods in Fluids

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A three-dimensional fluid-structure interaction solver based on an improved weakly compressible moving particle simulation (WC-MPS) method and a geometrically nonlinear shell structural model is developed and applied to hydro-elastic free-surface flows. The fluid-structure coupling is performed by a polygon wall boundary model that can handle particles and finite elements of distinct sizes. In WC-MPS, a tuning-free diffusive term is introduced to the continuity equation to mitigate nonphysical pressure oscillations. Discrete divergence operators are derived and applied to the polygon wall boundary, of which the numerical stability is enhanced by a repulsive Lennard-Jones force.Additionally, an efficient technique to deal with the interaction between fluid particles placed at opposite sides of zero-thickness walls is proposed. The geometrically nonlinear shell is modeled by an unstructured mesh of six-node triangular elements. Finite rotations are considered with Rodrigues parameters and a hyperelastic constitutive model is adopted. Benchmark examples involving free-surface flows and thin-walled structures demonstrate that the proposed model is robust, numerically stable and offers more efficient computation by allowing mesh size larger than that of fluid particles.

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