Towards Resolving the Atomization Process of an Idealized Fire Sprinkler with VOF Modeling

Meredith, Karl V.; Zhou, Xiangyang; Wang, Y.

doi:10.4995/ilass2017.2017.5014

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Otherwise, the solution method is based on the interFoam solver of the OpenFOAM fluid dynamics library (Deshpande et al, 2012). The interFoam solver has been previously used for studying a pressure-swirl atomizer by Renze et al (2011), while the isoAdvector scheme has been used for studying atomization in the context of fire suppression by Meredith et al (2017). For more application examples of interFoam, see the references in the review by Deshpande et al (2012).…”

Section: Introductionmentioning

confidence: 99%

Analysis of viscous fluid flow in a pressure-swirl atomizer using large-eddy simulation

Laurila

Roenby

Maakala

et al. 2019

International Journal of Multiphase Flow

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A computational fluid dynamics study is carried out on the inner nozzle flow and onset of liquid sheet instability in a large-scale pressure-swirl atomizer with asymmetric inflow configuration for high viscosity fluids. Large-eddy simulations (LES) of the two-phase flow indicate the unsteady flow character inside the nozzle and its influence on liquid sheet formation. A novel geometric volume-offluid (VOF) method by Roenby et al., termed isoAdvector, is applied for sharp interface capturing (Roenby J., Bredmose H., Jasak H., 2016, A computational method for sharp interface advection, Royal Society Open Science 3). We carry out a Reynolds number sweep (420 ≤ Re ≤ 5300) in order to investigate the link between the asymmetric inner nozzle flow and liquid sheet characteristics in laminar, transitional and fully turbulent conditions. Inside the nozzle, the numerical simulations reveal counter-rotating Dean vortices, flow impingement locations, and strong asymmetric flow features at all investigated Reynolds numbers. A helical, rotating gaseous core is observed when Re ≥ 1660. For laminar flow (Re = 420), an S-shaped liquid film is observed, while the gas core presence at Re ≥ 1660 results in a hollow cone liquid sheet. For the intermediate value Re = 830, the numerical simulations indicate a liquid sheet of mixed type.

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Section: Introductionmentioning

confidence: 99%

Analysis of viscous fluid flow in a pressure-swirl atomizer using large-eddy simulation

Laurila

Roenby

Maakala

et al. 2019

International Journal of Multiphase Flow

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show abstract

“…The algorithm performs very well in terms of advection accuracy, interface sharpness, volume conservation, and boundedness [3]. The method is well-documented and tested in multiple areas of application [15][16][17][18]. Especially the sharp interface attributes of isoAdvector is a desirable feature when simulating waves interacting with porous structures in coastal and marine engineering.…”

Section: Introductionmentioning

confidence: 99%

Extending the isoAdvector Geometric VOF Method to Flows in Porous Media

et al. 2023

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We consider the interfacial flow in and around porous structures in coastal and marine engineering.* During recent years, interfacial flow through porous media has been repeatedly simulated with Computational Fluid Dynamics (CFD) based on algebraic Volume Of Fluid (VOF) methods [1] [2]. Here, we present an implementation of a porous medium interfacial flow solver based on the geometric VOF method, isoAdvector [3] [4]. In our implementation, the porous medium is treated without resolving the actual pore geometry. Rather, the porous media, pores, and rigid structure are considered a continuum and the effects of porosity on the fluid flow are modelled through source terms in the Navier-Stokes equations, including Darcy-Forchheimer forces, added mass force and accounting for the part of mesh cells that are occupied by the solid material comprising the skeleton of the porous medium. The governing equations are adopted from the formulation by Jensen et al. [1]. For the interface advection using isoAdvector, we also account for the reduced cell volume available for fluid flow and for the increase in the interface front velocity caused by a cell being partially filled with solid material. The solver is implemented in the open source CFD library OpenFOAM®. It is validated using two case setups: 1) A pure passive advection test case to compare the isolated advection algorithm against a known analytical solution and 2) a porous dam break case by Liu et al. [5] where both numerical and experimental results are available for comparison. We find good agreement with numerical and experimental results. For both cases the interface sharpness, shape conservation as well as volume conservation and boundedness are demonstrated to be very good. The solver is released as open source for the benefit of the coastal and marine CFD community (code repository https://github.com/InterFlowers/porousInterIsoFoam) and as of OpenFOAM-v2112 the new functionality is integrated in the official interIsoFoam solver. * This article is an updated version of the conference paper Missios et al. 2022 [6] presented at the Marine2021 conference.

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A finite-volume implementation of the phase-field model for brittle fracture with adaptive mesh refinement

Yang,

Guo,

Yang

2024

Computers and Geotechnics

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Towards Resolving the Atomization Process of an Idealized Fire Sprinkler with VOF Modeling

Cited by 5 publications

References 15 publications

Analysis of viscous fluid flow in a pressure-swirl atomizer using large-eddy simulation

Analysis of viscous fluid flow in a pressure-swirl atomizer using large-eddy simulation

Extending the isoAdvector Geometric VOF Method to Flows in Porous Media

A finite-volume implementation of the phase-field model for brittle fracture with adaptive mesh refinement

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