Numerical simulations of two-dimensional wet foam by the immersed boundary method

Kim, Yongsam; Seol, Yunchang

doi:10.1016/j.compstruc.2013.03.015

Cited by 2 publications

(2 citation statements)

References 26 publications

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“…The foam models aim to find homogenous bulk properties from analysis of a unit-cell [30], while these studies are not concerned with evolving specific elements of the structure the unit-cell analysis methods could be extended to resolve detailed deformation of the microstructure. The Immersed Boundary Method (IBM) was used by Kim and Seol [31] for a domain of arbitrary 2D foam. This method appears to be a potential option for modelling the HC-PBGF geometry, but to avoid the computational expense we opted for a simpler approach.…”

Section: Existing Methods To Model the Microstructure Evolutionmentioning

confidence: 99%

MicroStructure Element Method (MSEM): viscous flow model for the virtual draw of microstructured optical fibers

Jasion¹,

Shrimpton²,

Chen³

et al. 2015

Opt. Express

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Abstract:We propose a new method to accurately model the structural evolution of a microstructured fiber (MOF) during its drawing process, given its initial preform structure and draw conditions. The method, applicable to a broad range of MOFs with high air-filling fraction and thin glass membranes, is an extension of the Discrete Element Method; it determines forces on the nodes in the microstructure to progressively update their position along the neck-down region, until the fiber reaches a final frozen state. The model is validated through simulation of 6 Hollow Core Photonic Band Gap Fibers (HC-PBGFs) and is shown to predict accurately the final fiber dimensions and cross-sectional distortions. The model is vastly more capable than other state of the art models and allows fast exploration of wide drawing parameter spaces, eliminating the need for expensive and time-consuming empirical parameter scans.

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Section: Existing Methods To Model the Microstructure Evolutionmentioning

confidence: 99%

MicroStructure Element Method (MSEM): viscous flow model for the virtual draw of microstructured optical fibers

Jasion¹,

Shrimpton²,

Chen³

et al. 2015

Opt. Express

View full text Add to dashboard Cite

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“…The dynamics of a compound droplet in shear flow was researched in [10]. See the articles [11,12,13] to refer to the treatment of the multiple junction case with a foam model. LSM uses a level set function to capture moving interfaces and has become popular in many disciplines since its development by Osher and Sethian in the 1980s [14].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Numerical Methods for Ternary Fluid Flows: Immersed Boundary, Level-Set, and Phase-Field Methods

Lee¹,

Jeong²,

Choi³

et al. 2016

Journal of the Korea Society for Industrial and Applied Mathema

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ABSTRACT. This paper reviews and compares three different methods for modeling incompressible and immiscible ternary fluid flows: the immersed boundary, level set, and phase-field methods. The immersed boundary method represents the moving interface by tracking the Lagrangian particles. In the level set method, an interface is defined implicitly by using the signed distance function, and its evolution is governed by a transport equation. In the phase-field method, the advective Cahn-Hilliard equation is used as the evolution equation, and its order parameter also implicitly defines an interface. Each method has its merits and demerits. We perform the several simulations under different conditions to examine the merits and demerits of each method. Based on the results, we determine the most suitable method depending on the specific modeling needs of different situations.

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Numerical simulations of two-dimensional wet foam by the immersed boundary method

Cited by 2 publications

References 26 publications

MicroStructure Element Method (MSEM): viscous flow model for the virtual draw of microstructured optical fibers

MicroStructure Element Method (MSEM): viscous flow model for the virtual draw of microstructured optical fibers

Comparison of Numerical Methods for Ternary Fluid Flows: Immersed Boundary, Level-Set, and Phase-Field Methods

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