Smoothed Particle Hydrodynamics for the Rising Pattern of Oil Droplets

Hosseinkhani, Mehdi Rostami; Omidvar, Pourya

doi:10.1115/1.4039517

Cited by 12 publications

(3 citation statements)

References 30 publications

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“…This technique defines the fluid into a set of particles that interact with each other (Gingold & Monaghan, 1977;Lucy, 1977;Monaghan, 1992), and also makes it easier to model the interface between the two phases than the Euler method. It is widely used in fluid mechanics problems, including free surface flows (Omidvar, et al, 2015), wave-body interactions , and multiphase flow (Hosseinkhani & Omidvar, 2018) as well as non-Newtonian fluid flows, which are defined by various viscoplastic models such as Bingham, Herschel-Buckley, Cross, etc. (Shakibaeinia & Jin, 2011;Khanpour, et al, 2016;Omidvar, et al, 2018;Fourtakas & Rogers, 2016;Nikeghbali & Omidvar, 2018).…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional simulation of granular flow using a mesh-free numerical model

Kheirkhahan,

Omidvar,

Nikeghbali

et al. 2024

Preprint

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The study and modeling of granular materials using various rheological models are intriguing subjects in numerical simulations and are applicable for predicting and investigating the behavior of different materials, such as sand and granules, in various phenomena like dam breaks or dry landslides. In this paper, we conducted three-dimensional simulations of column collapses with limestone and sand using the μ(I) rheological model within the SPH framework. To assess the performance of the developed code, we compared experimental and numerical values of the free surface of granular particles at different time intervals. The results demonstrated that the numerical modeling error is less than five percent. Additionally, we compared particle dispersion conditions at different time points, indicating the high accuracy of the developed code. Therefore, the code developed for three-dimensional conditions, incorporating the μ(I) rheological model, can be effectively applied to similar phenomena.

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Section: Introductionmentioning

confidence: 99%

Three-dimensional simulation of granular flow using a mesh-free numerical model

Kheirkhahan,

Omidvar,

Nikeghbali

et al. 2024

Preprint

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“…Smoothed Particle Hydrodynamics (SPH) is a mesh-free and fully Lagrangian method where the fluid is divided into a set of particles interacting with each other (Gingold and Monaghan, 1977;Lucy, 1977). The Lagrangian methods are widely utilized in modeling the freesurface flows (Omidvar et al 2015), wave-body interaction , multiphase flows (Hosseinkhani and Omidvar, 2018), and non-Newtonian fluid flows (Shao and Lo, 2003;Shakibaeinia and Jin, 2011;Khanpour et al 2016;Omidvar et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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 SPH, in order to define interactions between particles, and satisfy the laws of fluid dynamics, Gingold and Monaghan [5] used a kernel estimation technique. Over the past decades, SPH has been applied to multiphase flows [8][9][10], gravity currents [11], heat conduction [12], solid mechanics problems [13,14], pipe flows [15,16] and flows in complex systems [17]. FSI modeling capabilities of different methods including SPH were investigated in Ref.…”

Section: Introductionmentioning

confidence: 99%

Fully Coupled Smoothed Particle Hydrodynamics-Finite Element Method Approach for Fluid–Structure Interaction Problems With Large Deflections

Dinçer

Demir

Bozkuş

et al. 2019

Journal of Fluids Engineering

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In this study, a combination of the smoothed particle hydrodynamics (SPH) and finite element method (FEM) solving the complex problem of interaction between fluid with free surface and an elastic structure is studied. A brief description of SPH and FEM is presented. Contact mechanics is used for the coupling between fluid and structure, which are simulated with SPH and FEM, respectively. In the proposed method, to couple mesh-free and mesh-based methods, fluid and structure are solved together by a complete stiffness matrix instead of iterative predictive–corrective or master–slave methods. In addition, fully dynamic large-deformation analysis is carried out in FEM by taking into account mass and damping of the elastic structure. Accordingly, a two-dimensional fluid–structure interaction (FSI) code is developed and validated with two different experiments available in the literature. The results of the numerical method are in good agreement with the experiments. In addition, a novel laboratory experiment on a dam break problem with elastic gate in which the length of the initial water column is larger than its height is conducted. The main difference between the previous experiments and the one conducted in this study is that an upward water motion parallel to the elastic gate is observed at the upstream side of the gate. This motion is captured with the numerical method.

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Smoothed Particle Hydrodynamics for the Rising Pattern of Oil Droplets

Cited by 12 publications

References 30 publications

Three-dimensional simulation of granular flow using a mesh-free numerical model

Three-dimensional simulation of granular flow using a mesh-free numerical model

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

Fully Coupled Smoothed Particle Hydrodynamics-Finite Element Method Approach for Fluid–Structure Interaction Problems With Large Deflections

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