SPH modeling of plane jets into water bodies through an inflow/outflow algorithm

Aristodemo, Francesco; Marrone, S.; Federico, Iván

doi:10.1016/j.oceaneng.2015.06.018

Cited by 31 publications

(9 citation statements)

References 49 publications

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“…However, these negative velocities become non-symmetrical as time goes on. According to the results of the vertical velocity component by the ISPH method, it is in good agreement with the results of Aristodemo et al [17].…”

Section: Numerical Validation Of the Water Jet Modelsupporting

confidence: 91%

“…The water jet is injected from Di with the velocity V = −0.45 j m/s, and its direction is straight down. Figure 11 shows the comparisons of the vertical component of the velocity field w between ISPH and the results of Aristodemo et al [17] at three significant time instants. It can be seen from Figure 11 that the still water is accelerated progressively with the entry of the water jet flow, and the highest negative velocities are symmetrical by the jet centerline at the initial time.…”

Section: Numerical Validation Of the Water Jet Modelmentioning

confidence: 99%

“…To quantify the accuracy of the ISPH results, Figure 12 gives the comparisons of relative depth h/H of jet flow between the results of Aristodemo et al and Fletcher et al [16,17], where h is the depth of jet flow penetration. The results of ISPH have a high degree of coincidence with the ones of other numerical models.…”

Section: Validation Of Injected Water Jet Flow Modelmentioning

confidence: 99%

“…Fischer et al [16] used three different CFD codes, namely, the CHYMES multiphase flow model, the FEAT finite element code, and the Harwell-FLOw3D finite volume code, to simulate the problem of a laminar jet of fluid injected into a tank of fluid at rest and make a detailed comparison. Aristodemo et al [17] studied the plane jets propagating into still fluid tanks and current flows by using the WCSPH method. Andreopoulos et al [18] carried out an experiment on the flow generated by a plane with a buoyant jet discharging vertically into shallow water.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Study on Violent Sloshing with Water Jet Flows by Using the ISPH Method

Jiang

You

et al. 2019

Water

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The smoothed particle hydrodynamics (SPH) method has been playing a more and more important role in violent flow simulations since it is easy to deal with the large deformation and breaking flows from its Lagrangian particle characteristics. In this paper, the incompressible SPH (ISPH) method was used to simulate the liquid sloshing in a 2D tank with water jet flows. The study compares the liquid sloshing under different water jet conditions to analyze the effects of the excitation frequency and the water jet on impact pressure. The results demonstrate that the water jet flows can significantly affect the impact pressures on the wall caused by violent sloshing. The main purpose of the paper is to test the ISPH ability for this study and some useful regulars that are obtained from different numerical cases and study the effect of their practical importance.

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Section: Numerical Validation Of the Water Jet Modelsupporting

confidence: 91%

Section: Numerical Validation Of the Water Jet Modelmentioning

confidence: 99%

Section: Validation Of Injected Water Jet Flow Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative Study on Violent Sloshing with Water Jet Flows by Using the ISPH Method

Jiang

You

et al. 2019

Water

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“…To date, different SPH models have been widely studied and applied in the field of fluid mechanics. Recently, SPH methods have been widely applied in single-phase flows [12][13][14][15], multiphase flows [16][17][18], and diffusion processes between different density flows [19,20]. Compared to the Euler method, the existing Lagrangian SPH method has performed well in simulating the motion characteristic of particles.…”

Section: Smooth Particle Hydrodynamics Methodsmentioning

confidence: 99%

Numerical Simulation of Hydrodynamics and Reaeration over a Stepped Spillway by the SPH Method

Wan

Gualtieri

et al. 2017

Water

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Aerated flows are characterized by complex hydrodynamics and mass-transfer processes. As a Lagrangian method, smoothed particle hydrodynamics (SPH) has a significant advantage in tracking the air-water interface in turbulent flows. This paper presents the application of an SPH method to investigate hydrodynamics and reaeration over stepped spillways. In the SPH method, the entrainment of dissolved oxygen (DO) is studied using a multiphase mass transfer SPH method for reaeration. The numerical results are compared with the hydrodynamics data from Chanson and DO data from Cheng. The simulation results show that velocity distribution and the location of free-surface aeration inception agree with the experimental results. Compared with the experimental results, the distribution of DO concentration over the stepped spillway is consistent with the measurement results. The study shows that the two-phase DO mass transfer SPH model is reliable and reasonable for simulating the hydrodynamics characteristics and reaeration process.

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SPH modelling of depth‐limited turbulent open channel flows over rough boundaries

Kazemi

Nichols

Tait

et al. 2016

Numerical Methods in Fluids

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SUMMARYA numerical model based on the smoothed particle hydrodynamics method is developed to simulate depth-limited turbulent open channel flows over hydraulically rough beds. The 2D Lagrangian form of the Navier-Stokes equations is solved, in which a drag-based formulation is used based on an effective roughness zone near the bed to account for the roughness effect of bed spheres and an improved sub-particle-scale model is applied to account for the effect of turbulence. The sub-particle-scale model is constructed based on the mixing-length assumption rather than the standard Smagorinsky approach to compute the eddy-viscosity. A robust in/out-flow boundary technique is also proposed to achieve stable uniform flow conditions at the inlet and outlet boundaries where the flow characteristics are unknown. The model is applied to simulate uniform open channel flows over a rough bed composed of regular spheres and validated by experimental velocity data. To investigate the influence of the bed roughness on different flow conditions, data from 12 experimental tests with different bed slopes and uniform water depths are simulated, and a good agreement has been observed between the model and experimental results of the streamwise velocity and turbulent shear stress. This shows that both the roughness effect and flow turbulence should be addressed in order to simulate the correct mechanisms of turbulent flow over a rough bed boundary and that the presented smoothed particle hydrodynamics model accomplishes this successfully.

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SPH modeling of plane jets into water bodies through an inflow/outflow algorithm

Cited by 31 publications

References 49 publications

Comparative Study on Violent Sloshing with Water Jet Flows by Using the ISPH Method

Comparative Study on Violent Sloshing with Water Jet Flows by Using the ISPH Method

Numerical Simulation of Hydrodynamics and Reaeration over a Stepped Spillway by the SPH Method

SPH modelling of depth‐limited turbulent open channel flows over rough boundaries

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