Numerical simulation for fluid droplet impact on discrete particles with coupled SPH-DEM method

Li, Yanqing; Li, Daming; Bie, Shaowei; Wang, Zhichao; Zhang, Hongqiang; Tang, Xingchen; Zhen, Zhu

doi:10.1108/hff-11-2017-0464

Cited by 5 publications

(3 citation statements)

References 54 publications

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“…Within the framework of the SPH method, the simulation domain is populated by freely moving particles where physical properties are averaged over computational particles using a smoothing kernel function, and the governing equations are discretized on these particles. SPH has been applied to a wide range of applications such as free surface flows (Aly et al , 2013; Leroy et al , 2016; Gotoh et al , 2014), hydrodynamic instabilities (Rahmat et al , 2014; Shadloo and Yildiz, 2011), multi-phase flows (Rahmat et al , 2016; Hopp-Hirschler et al , 2019; Rahmat and Yildiz, 2018; Nasiri et al , 2018), bluff body simulations (Shadloo et al , 2011) and fluid–solid interactions (Rafiee and Thiagarajan, 2009; Tran-Duc et al , 2017; Rahmat et al , 2019; Li et al , 2018).…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical simulation of dissolution of solid particles in fluid flow using the SPH method

Rahmat

Barigou

Alexiadis

2019

HFF

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Purpose The purpose of this paper is to numerically study the dissolution of solid particles using the smoothed particle hydrodynamics (SPH) method. Design/methodology/approach To implement dissolution, an advection–diffusion mass transport equation is solved over computational particles. Subsequently, these particles disintegrate from the solute when their concentration falls below a certain threshold. Findings It is shown that the implementation of dissolution is in good agreement with available data in the literature. The dissolution of solid particles is studied for a wide range of Reynolds and Schmidt numbers. Two-dimensional (2D) results are compared with three-dimensional (3D) cases to identify where 2D results are accurate for modelling 3D dissolution phenomena. Originality/value The present numerical model is capable of addressing related problems in pharmaceutical, biochemical, food processing and detergent industries.

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Section: Governing Equationsmentioning

confidence: 99%

Numerical simulation of dissolution of solid particles in fluid flow using the SPH method

Rahmat

Barigou

Alexiadis

2019

HFF

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“…It is demonstrated that the rheological behavior of the surrounding fluid could dramatically affect droplet deformation. Li et al (2018) developed a new coupled model to simulate the interaction between fluid droplet collisions on discrete particles (DPs). Khayyer et al (2023) presented velocity-divergence error mitigating (VEM) and volume conservation shifting (VCS) schemes to enhance the resolution of the continuity equation and satisfy incompressibility conditions.…”

Section: Introductionmentioning

confidence: 99%

The simulation of droplet impact on liquid film evaporation in horizontal falling film evaporator based on smoothed particle hydrodynamics

Fan,

Ma,

et al. 2024

HFF

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Purpose In this paper, the complex flow evaporation process of droplet impact on the liquid film in a horizontal falling film evaporator is numerically studied based on smoothed particle hydrodynamics (SPH) method. The purpose of this paper is to present the mechanism of the water treatment problem of the falling film evaporation for the high salinity mine water in Xinjiang region of China. Design/methodology/approach To effectively characterize the phase transition problem, the particle splitting and merging techniques are introduced. And the particle absorbing layer is proposed to improve the nonphysical aggregation phenomenon caused by the continuous splitting of gas phase particles. The multiresolution model and the artificial viscosity are adopted. Findings The SPH model is validated qualitatively with experiment results and then applied to the evaporation of the droplet impact on the liquid film. It is shown that the larger single droplet initial velocity and the smaller single droplet initial temperature difference between the droplet and liquid film improve the liquid film evaporation. The heat transfer effect of a single droplet is preferable to that of multiple droplets. Originality/value A multiphase SPH model for evaporation after the droplet impact on the liquid film is developed and validated. The effects of different factors on liquid film evaporation, including single droplet initial velocity, single droplet initial temperature and multiple droplets are investigated.

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“…Also, the per-grid-point operation cost increases drastically. There are other numerical methods such as fictitiousdomain method (DLM), smooth particle hydrodynamics (SPH) (Li et al, 2018), lattice Boltzmann method (LBM) and immersed boundary method (IBM) that avoid grid conformation and provide better fluid-structure coupling capabilities. Combined strategies involving IB-LBM have also been extensively studied for fluid and thermal problems (Adeeb et al, 2018;Bamiro and Liou, 2013).…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of buckling and asymmetric behavior of flexible filament using temporal second-order immersed boundary method

Kanchan

Maniyeri

2019

HFF

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Purpose The purpose of this paper is to perform two-dimensional numerical simulation involving fluid-structure interaction of flexible filament. The filament is tethered to the bottom of a rectangular channel with oscillating fluid flow inlet conditions at low Reynolds number. The simulations are performed using a temporal second-order finite volume-based immersed boundary method (IBM). Further, to understand the relation between different aspect ratios i.e. ratio of filament length to channel height (Len/H) and fixed channel geometry ratio, i.e. ratio of channel height to channel length (H/Lc) on mixing and pumping capabilities. Design/methodology/approach The discretization of governing continuity and Navier–Stokes equation is done by finite-volume method on a staggered Cartesian grid. SIMPLE algorithm is used to solve fluid velocity and pressure terms. Two cases of oscillatory flow conditions are used with the flexible filament tethered at the center of bottom channel wall. The first case is sinusoidal oscillatory flow with phase shift (SOFPS) and second case is sinusoidal oscillatory flow without phase shift (SOF). The simulation results are validated with filament dynamics studies of previous researchers. Further, parametric analysis is carried to study the effect of filament length (aspect ratio), filament bending rigidity and Reynolds number on the complex deformation and behavior of flexible filament interacting with nearby oscillating fluid motion. Findings It is found that selection of right filament length and bending rigidity is crucial for fluid mixing scenarios. The phase shift in fluid motion is also found to critically effect filament displacement dynamics, especially for rigid filaments. Aspect ratio, suitable for mixing applications is dependent on channel geometry ratio. Symmetric deformation is observed for filaments subjected to SOFPS condition irrespective of bending rigidity, whereas medium and low rigidity filaments placed in SOF condition show severe asymmetric behavior. Two key findings of this study are: symmetric filament conformity without appreciable bending produces sweeping motion in fluid flow, which is highly suited for mixing application; and asymmetric behavior shown by the filament depicts antiplectic metachronism commonly found in beating cilia. As a result, it is possible to pin point the type of fluid motion governing fluid mixing and fluid pumping. The developed computational model can, thus, successfully demonstrate filament-fluid interaction for a wide variety of similar problems. Originality/value The present study uses a temporal second-order finite volume-based IBM to examine flexible filament dynamics for various applications such as fluid mixing. Also, it highlights the relationship between channel geometry ratio and filament aspect ratio and its effect on filament sweep patterns. The study further reports the effect of filament displacement dynamics with or without phase shift for inlet oscillating fluid flow condition.

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Numerical simulation for fluid droplet impact on discrete particles with coupled SPH-DEM method

Cited by 5 publications

References 54 publications

Numerical simulation of dissolution of solid particles in fluid flow using the SPH method

Numerical simulation of dissolution of solid particles in fluid flow using the SPH method

The simulation of droplet impact on liquid film evaporation in horizontal falling film evaporator based on smoothed particle hydrodynamics

Numerical simulation of buckling and asymmetric behavior of flexible filament using temporal second-order immersed boundary method

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