Combining CVFEM and meshless front tracking in Hele–Shaw mold filling simulation

Estacio, K. C.; Nonato, Luís Gustavo; Mangiavacchi, Norberto; Carey, G. F.

doi:10.1002/fld.1732

Cited by 7 publications

(7 citation statements)

References 10 publications

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“…Yu et al . implemented CVFEM for the integration of the momentum equations in the filling process of a two‐dimensional domain; Estacio et al applied the method for the integration of the Hele–Shaw equation to calculate the pressure in a nonisothermal injection molding process.…”

Section: Introductionmentioning

confidence: 92%

Two‐dimensional non‐Newtonian injection molding with a new control volume FEM/volume of fluid method

Salinas

Vasco

Moraga

2012

Numerical Methods in Fluids

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SUMMARYA new method based on volume of fluid for interface tracking in the simulation of injection molding is presented. The proposed method is comprised of two main stages: accumulation and distribution of the volume fraction. In the first stage the equation for the volume fraction with a noninterfacial flux condition is solved. In the second stage the accumulated volume of fluid that arises as a consequence of the application of the first one is dispersed. This procedure guarantees that the fluid fills the available space without dispersion of the interface. The mathematical model is based on two‐phase transport equations that are numerically integrated through the control volume finite element method. The numerical results for the interface position are successfully verified with analytical results and numerical data available in the literature for one‐dimensional and two‐dimensional domains. The transient position of the advance fronts showed an effective and consistent simulation of an injection molding process. The nondispersive volume of fluid method here proposed is implemented for the simulation of nonisothermal injection molding in two‐dimensional cavities. The obtained results are represented as transient interface positions, isotherms and pressure distributions during the injection molding of low density polyethylene. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 92%

Two‐dimensional non‐Newtonian injection molding with a new control volume FEM/volume of fluid method

Salinas

Vasco

Moraga

2012

Numerical Methods in Fluids

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“…As for the numerical simulation of the polymer filling process, it mainly involves the solution of Navier‐Stokes (N‐S) equations, the description of the viscoelastic behaviour of the polymer melt, and the capturing of the interface front in the irregular cavity. The finite element method (FEM) has been one of the most popular methods to deal with the two‐phase flow in the filling process. In 2008, Li et al simulated the polymer injection molding process using the adaptive coupled arbitrary Lagrangian‐Eulerian finite element and meshfree method.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of polymer filling process by a combined finite element/discontinuous Galerkin/level set method

2018

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The filling process in injection molding involves polymer melt and air with large density/viscosity ratios and the transient free surface. It is treated as a challenging viscoelastic-Newtonian two-phase flow problem especially on irregular domains. In this paper, the complex filling process for the irregular cavity is simulated using a combined finite element/discontinuous Galerkin/level set method with application to the socket with five inserts, which is rarely investigated. The rheological behaviour of the viscoelastic fluid is predicted according to the eXtended Pom-Pom (XPP) constitutive model. The level set method proposed from prior literature is utilized to capture the moving interface because of its simplicity and efficiency. The hybrid continuous and discontinuous Galerkin method is utilized to solve the viscoelastic incompressible Navier-Stokes equations. The second order Runge Kutta discontinuous Galerkin (RKDG) method is employed to deal with the XPP constitutive equation and the level set equation due to their hyperbolic natures. This combined algorithm is convenient to cope with the irregular cavity and avoid any stabilization terms. We first investigate the filling process of the rectangular cavity without and with a diamond insert and compare with other numerical and experimental results to illustrate the validity of the coupled method. Moreover, the cavity of the socket with five inserts is considered an application case. We analyze the influences of the inlet velocity and elasticity on physical quantities such as stresses, stretch, etc. The simulation results could provide some numerical predictions for the polymer industry.

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“…This work shows a methodology that integrates design and simulation [1,2] in a production process to manufacture injection pieces in automobile industry, elaborated to optimise the work in a real plant, and presented through a real example.…”

Section: Introductionmentioning

confidence: 99%

Design and Simulation of Production of Injection Pieces in Automobile Industry

Argaiz

Macías

Fernandez³

et al. 2008

2008 Second UKSIM European Symposium on Computer Modeling and Simulation

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This work shows a design and simulation methodology of a production process to manufacture injection pieces in automobile industry, elaborated to optimise the work in a real plant, and presented through a real example. The example consists in two inserts of an instrument panel for an automobile.The departure data are the design plane of the piece, the materials and additives used, the final specifications of the piece, and the production. The simulation methodology allows us to establish the rules to develop the mold, to specify the number of cavities, to determine the solidification and the cycle times, to locate the pieces and the tapping in the mold, to calculate the clamp force necessary in the injector machine and the dimensions of the mold, to analyse the results of the simulation (with Mold-Flow), to choose the appropriate injector machine and to obtain the necessary information to develop the mold.

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Combining CVFEM and meshless front tracking in Hele–Shaw mold filling simulation

Cited by 7 publications

References 10 publications

Two‐dimensional non‐Newtonian injection molding with a new control volume FEM/volume of fluid method

Two‐dimensional non‐Newtonian injection molding with a new control volume FEM/volume of fluid method

Numerical simulation of polymer filling process by a combined finite element/discontinuous Galerkin/level set method

Design and Simulation of Production of Injection Pieces in Automobile Industry

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